Fixed the mistakes for Conda Installation

Author: NeoKish

_get_started/previous-versions.md

@@ -31,12 +31,12 @@ conda install pytorch==1.9.0 torchvision==0.10.0 torchaudio==0.9.0 -c pytorch
 #####  Linux and Windows
 
 ```
+# CUDA 11.1
+conda install pytorch==1.9.0 torchvision==0.10.0 torchaudio==0.9.0 cudatoolkit=11.1 -c pytorch 
+
 # CUDA 10.2
 conda install pytorch==1.9.0 torchvision==0.10.0 torchaudio==0.9.0 cudatoolkit=10.2 -c pytorch
 
-# CUDA 11.3
-conda install pytorch==1.9.0 torchvision==0.10.0 torchaudio==0.9.0 cudatoolkit=11.3 -c pytorch -c conda-forge
-
 # CPU Only
 conda install pytorch==1.9.0 torchvision==0.10.0 torchaudio==0.9.0 cpuonly -c pytorch
 ```
@@ -85,11 +85,14 @@ conda install pytorch==1.8.1 torchvision==0.9.1 torchaudio==0.8.1 -c pytorch
 #####  Linux and Windows
 
 ```
+# CUDA 11.1
+conda install pytorch==1.8.1 torchvision==0.9.1 torchaudio==0.8.1 cudatoolkit=11.1 -c pytorch
+
 # CUDA 10.2
 conda install pytorch==1.8.1 torchvision==0.9.1 torchaudio==0.8.1 cudatoolkit=10.2 -c pytorch
 
-# CUDA 11.3
-conda install pytorch==1.8.1 torchvision==0.9.1 torchaudio==0.8.1 cudatoolkit=11.3 -c pytorch -c conda-forge
+# CUDA 10.1
+conda install pytorch==1.8.1 torchvision==0.9.1 torchaudio==0.8.1 cudatoolkit=10.1 -c pytorch
 
 # CPU Only
 conda install pytorch==1.8.1 torchvision==0.9.1 torchaudio==0.8.1 cpuonly -c pytorch