Fixed docs for WandbLogger (#5128)

Fixed a small bug with the `WandbLogger` docs.

Co-authored-by: Jirka Borovec <[email protected]>
Co-authored-by: Roger Shieh <[email protected]>

Author: 3 people

pytorch_lightning/loggers/wandb.py

@@ -59,7 +59,7 @@ class WandbLogger(LightningLoggerBase):
 
     Example::
 
-    .. code::
+    .. code-block:: python
 
         from pytorch_lightning.loggers import WandbLogger
         from pytorch_lightning import Trainer