Update hooks.py

Author: justusschock

pytorch_lightning/core/hooks.py

@@ -667,31 +667,31 @@ def predict_dataloader(self) -> EVAL_DATALOADERS:
         """
 
     def on_train_dataloader(self) -> None:
-        """Called before requesting the train dataloader."""
+        """Called before requesting the train dataloader.
 
         .. deprecated:: v1.5
             :meth:`on_train_dataloader` is deprecated and will be removed in v1.7.0.
             Please use :meth:`train_dataloader()` directly.
         """
 
     def on_val_dataloader(self) -> None:
-        """Called before requesting the val dataloader."""
+        """Called before requesting the val dataloader.
 
         .. deprecated:: v1.5
             :meth:`on_val_dataloader` is deprecated and will be removed in v1.7.0.
             Please use :meth:`val_dataloader()` directly.
         """
 
     def on_test_dataloader(self) -> None:
-        """Called before requesting the test dataloader."""
+        """Called before requesting the test dataloader.
 
         .. deprecated:: v1.5
             :meth:`on_test_dataloader` is deprecated and will be removed in v1.7.0.
             Please use :meth:`test_dataloader()` directly.
         """
 
     def on_predict_dataloader(self) -> None:
-        """Called before requesting the predict dataloader."""
+        """Called before requesting the predict dataloader.
 
         .. deprecated:: v1.5
             :meth:`on_predict_dataloader` is deprecated and will be removed in v1.7.0.