[c10d Store] Store Python Docs Fixes (#49130)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/49130
The Python Store API docs had some typos, where boolean value were
lower case, which is incorrect Python syntax. This diff fixes those typos.
Test Plan: Built and Rendered Docs
Reviewed By: mrshenli
Differential Revision: D25411492
fbshipit-source-id: fdbf1e6b8f81e9589e638286946cad68eb7c9252
