Update __main__.rst (GH-30896)

The reference to `venv` appears in the paragraph below, instead of above.
Fixed the documentation.
(cherry picked from commit 4e4e7c2)

Co-authored-by: David Gilbertson <gilbertson.david@gmail.com>

Co-authored-by: David Gilbertson <gilbertson.david@gmail.com>

Author: miss-islington

Doc/library/__main__.rst

@@ -253,7 +253,7 @@ attribute will include the package's path if imported::
 
 This won't work for ``__main__.py`` files in the root directory of a .zip file
 though.  Hence, for consistency, minimal ``__main__.py`` like the :mod:`venv`
-one mentioned above are preferred.
+one mentioned below are preferred.
 
 .. seealso::