Update base.py (#1965)

Improve documentation around opening repositories.

Co-authored-by: Sebastian Thiel <[email protected]>

Author: alex20230721

git/repo/base.py

@@ -179,7 +179,7 @@ def __init__(
         R"""Create a new :class:`Repo` instance.
 
         :param path:
-            The path to either the root git directory or the bare git repo::
+            The path to either the worktree directory or the .git directory itself::
 
                 repo = Repo("/Users/mtrier/Development/git-python")
                 repo = Repo("/Users/mtrier/Development/git-python.git")