[docs] More API fixes (#3640)

* part 2 of api fixes

* move randn_tensor

* add to toctree

* apply feedback

* more feedback

Author: stevhliu

docs/source/en/_toctree.yml

@@ -144,12 +144,16 @@
       title: Outputs
     - local: api/loaders
       title: Loaders
+    - local: api/utilities
+      title: Utilities
     title: Main Classes
   - sections:
     - local: api/pipelines/overview
       title: Overview
     - local: api/pipelines/alt_diffusion
       title: AltDiffusion
+    - local: api/pipelines/attend_and_excite
+      title: Attend and Excite
     - local: api/pipelines/audio_diffusion
       title: Audio Diffusion
     - local: api/pipelines/audioldm
@@ -164,24 +168,32 @@
       title: DDIM
     - local: api/pipelines/ddpm
       title: DDPM
+    - local: api/pipelines/diffedit
+      title: DiffEdit
     - local: api/pipelines/dit
       title: DiT
     - local: api/pipelines/if
       title: IF
+    - local: api/pipelines/pix2pix
+      title: InstructPix2Pix
     - local: api/pipelines/kandinsky
       title: Kandinsky
     - local: api/pipelines/latent_diffusion
       title: Latent Diffusion
+    - local: api/pipelines/panorama
+      title: MultiDiffusion Panorama
     - local: api/pipelines/paint_by_example
       title: PaintByExample
+    - local: api/pipelines/pix2pix_zero
+      title: Pix2Pix Zero
     - local: api/pipelines/pndm
       title: PNDM
     - local: api/pipelines/repaint
       title: RePaint
-    - local: api/pipelines/stable_diffusion_safe
-      title: Safe Stable Diffusion
     - local: api/pipelines/score_sde_ve
       title: Score SDE VE
+    - local: api/pipelines/self_attention_guidance
+      title: Self-Attention Guidance
     - local: api/pipelines/semantic_stable_diffusion
       title: Semantic Guidance
     - local: api/pipelines/spectrogram_diffusion
@@ -199,31 +211,21 @@
         title: Depth-to-Image
       - local: api/pipelines/stable_diffusion/image_variation
         title: Image-Variation
-      - local: api/pipelines/stable_diffusion/upscale
-        title: Super-Resolution
+      - local: api/pipelines/stable_diffusion/stable_diffusion_safe
+        title: Safe Stable Diffusion
+      - local: api/pipelines/stable_diffusion/stable_diffusion_2
+        title: Stable Diffusion 2
       - local: api/pipelines/stable_diffusion/latent_upscale
         title: Stable-Diffusion-Latent-Upscaler
-      - local: api/pipelines/stable_diffusion/pix2pix
-        title: InstructPix2Pix
-      - local: api/pipelines/stable_diffusion/attend_and_excite
-        title: Attend and Excite
-      - local: api/pipelines/stable_diffusion/pix2pix_zero
-        title: Pix2Pix Zero
-      - local: api/pipelines/stable_diffusion/self_attention_guidance
-        title: Self-Attention Guidance
-      - local: api/pipelines/stable_diffusion/panorama
-        title: MultiDiffusion Panorama
-      - local: api/pipelines/stable_diffusion/model_editing
-        title: Text-to-Image Model Editing
-      - local: api/pipelines/stable_diffusion/diffedit
-        title: DiffEdit
+      - local: api/pipelines/stable_diffusion/upscale
+        title: Super-Resolution
       title: Stable Diffusion
-    - local: api/pipelines/stable_diffusion_2
-      title: Stable Diffusion 2
     - local: api/pipelines/stable_unclip
       title: Stable unCLIP
     - local: api/pipelines/stochastic_karras_ve
       title: Stochastic Karras VE
+    - local: api/pipelines/model_editing
+      title: Text-to-Image Model Editing
     - local: api/pipelines/text_to_video
       title: Text-to-Video
     - local: api/pipelines/text_to_video_zero

docs/source/en/api/diffusion_pipeline.mdx

@@ -12,41 +12,25 @@ specific language governing permissions and limitations under the License.
 
 # Pipelines
 
-The [`DiffusionPipeline`] is the easiest way to load any pretrained diffusion pipeline from the [Hub](https://huggingface.co/models?library=diffusers) and to use it in inference.
+The [`DiffusionPipeline`] is the easiest way to load any pretrained diffusion pipeline from the [Hub](https://huggingface.co/models?library=diffusers) and use it for inference.
 
 <Tip>
 
-	One should not use the Diffusion Pipeline class for training or fine-tuning a diffusion model. Individual 
-	components of diffusion pipelines are usually trained individually, so we suggest to directly work 
-	with [`UNetModel`] and [`UNetConditionModel`].
+You shouldn't use the [`DiffusionPipeline`] class for training or finetuning a diffusion model. Individual 
+components (for example, [`UNetModel`] and [`UNetConditionModel`]) of diffusion pipelines are usually trained individually, so we suggest directly working with instead.
 
 </Tip>
 
-Any diffusion pipeline that is loaded with [`~DiffusionPipeline.from_pretrained`] will automatically 
-detect the pipeline type, *e.g.* [`StableDiffusionPipeline`] and consequently load each component of the 
-pipeline and pass them into the `__init__` function of the pipeline, *e.g.* [`~StableDiffusionPipeline.__init__`].
+The pipeline type (for example [`StableDiffusionPipeline`]) of any diffusion pipeline loaded with [`~DiffusionPipeline.from_pretrained`] is automatically 
+detected and pipeline components are loaded and passed to the `__init__` function of the pipeline.
 
 Any pipeline object can be saved locally with [`~DiffusionPipeline.save_pretrained`].
 
 ## DiffusionPipeline
+
 [[autodoc]] DiffusionPipeline
 	- all
 	- __call__
 	- device
 	- to
 	- components
-
-## ImagePipelineOutput
-By default diffusion pipelines return an object of class
-
-[[autodoc]] pipelines.ImagePipelineOutput
-
-## AudioPipelineOutput
-By default diffusion pipelines return an object of class
-
-[[autodoc]] pipelines.AudioPipelineOutput
-
-## ImageTextPipelineOutput
-By default diffusion pipelines return an object of class
-
-[[autodoc]] ImageTextPipelineOutput

docs/source/en/api/outputs.mdx

@@ -12,11 +12,11 @@ specific language governing permissions and limitations under the License.
 
 # BaseOutputs
 
-All models have outputs that are instances of subclasses of [`~utils.BaseOutput`]. Those are
-data structures containing all the information returned by the model, but that can also be used as tuples or
+All models have outputs that are subclasses of [`~utils.BaseOutput`]. Those are
+data structures containing all the information returned by the model, but they can also be used as tuples or
 dictionaries.
 
-Let's see how this looks in an example:
+For example:
 
 ```python
 from diffusers import DDIMPipeline
@@ -25,31 +25,45 @@ pipeline = DDIMPipeline.from_pretrained("google/ddpm-cifar10-32")
 outputs = pipeline()
 ```
 
-The `outputs` object is a [`~pipelines.ImagePipelineOutput`], as we can see in the
-documentation of that class below, it means it has an image attribute.
+The `outputs` object is a [`~pipelines.ImagePipelineOutput`] which means it has an image attribute.
 
-You can access each attribute as you would usually do, and if that attribute has not been returned by the model, you will get `None`:
+You can access each attribute as you normally would or with a keyword lookup, and if that attribute is not returned by the model, you will get `None`:
 
 ```python
 outputs.images
-```
-
-or via keyword lookup
-
-```python
 outputs["images"]
 ```
 
-When considering our `outputs` object as tuple, it only considers the attributes that don't have `None` values.
-Here for instance, we could retrieve images via indexing:
+When considering the `outputs` object as a tuple, it only considers the attributes that don't have `None` values.
+For instance, retrieving an image by indexing into it returns the tuple `(outputs.images)`:
 
 ```python
 outputs[:1]
 ```
 
-which will return the tuple `(outputs.images)` for instance.
+<Tip>
+
+To check a specific pipeline or model output, refer to its corresponding API documentation.
+
+</Tip>
 
 ## BaseOutput
 
 [[autodoc]] utils.BaseOutput
     - to_tuple
+
+## ImagePipelineOutput
+
+[[autodoc]] pipelines.ImagePipelineOutput
+
+## FlaxImagePipelineOutput
+
+[[autodoc]] pipelines.pipeline_flax_utils.FlaxImagePipelineOutput
+
+## AudioPipelineOutput
+
+[[autodoc]] pipelines.AudioPipelineOutput
+
+## ImageTextPipelineOutput
+
+[[autodoc]] ImageTextPipelineOutput