Revise docstrings within git.repo

Author: EliahKagan

git/repo/__init__.py

@@ -1,6 +1,6 @@
 # This module is part of GitPython and is released under the
 # 3-Clause BSD License: https://opensource.org/license/bsd-3-clause/
 
-"""Initialize the Repo package."""
+"""Initialize the repo package."""
 
 from .base import Repo as Repo  # noqa: F401