Fix the PyTorch Profiler link in staticdocs (#820)

Summary:
Pull Request resolved: #820

The extra `/` causes a 404 error if you actually click on the link

Reviewed By: diego-urgell

Differential Revision: D56848751

fbshipit-source-id: 7de31d2d80b40d65ee9fd7251aae4a4b1982f1fb

Author: alanhdu

torchtnt/framework/callbacks/dcp_saver.py

@@ -59,7 +59,7 @@
 
 class DistributedCheckpointSaver(BaseCheckpointer):
     """
-    A callback which periodically saves the application state during training using `Distributed Checkpoint <https://pytorch.org/docs/stable/distributed.checkpoint.html/>`_.
+    A callback which periodically saves the application state during training using `Distributed Checkpoint <https://pytorch.org/docs/stable/distributed.checkpoint.html>`_.
 
     This callback supplements the application state provided by :class:`torchtnt.unit.AppStateMixin`
     with the train progress, and train dataloader (if applicable).

torchtnt/framework/callbacks/pytorch_profiler.py

@@ -15,7 +15,7 @@
 
 class PyTorchProfiler(Callback):
     """
-    A callback which profiles user code using `PyTorch Profiler <https://pytorch.org/docs/stable/profiler.html/>`_.
+    A callback which profiles user code using `PyTorch Profiler <https://pytorch.org/docs/stable/profiler.html>`_.
 
     Args:
         profiler: a torch.profiler.profile context manager which will be used