[Docs] Minor doc fixes for init_process_group

Pull Request resolved: #47644

Minor Update to the init_process_group docs.
ghstack-source-id: 116337449

Differential Revision: [D24633432](https://our.internmc.facebook.com/intern/diff/D24633432/)

torch/distributed/distributed_c10d.py

@@ -401,11 +401,11 @@ def init_process_group(backend,
             asynchronously and the process will crash. ``NCCL_BLOCKING_WAIT``
             will provide errors to the user which can be caught and handled,
             but due to its blocking nature, it has a performance overhead. On
-            the other hand, ``NCCL_ASYNC_ERROR_HANDLING`` has little
+            the other hand, ``NCCL_ASYNC_ERROR_HANDLING`` has very little
             performance overhead, but crashes the process on errors. This is
             done since CUDA execution is async and it is no longer safe to
             continue executing user code since failed async NCCL operations
-            might result in subsequent CUDA operations to run on corrupted
+            might result in subsequent CUDA operations running on corrupted
             data. Only one of these two environment variables should be set.
         group_name (str, optional, deprecated): Group name.