fixup period

Author: picnixz

Doc/whatsnew/3.15.rst

@@ -201,6 +201,6 @@ on Python 3.13 and older.
     use :c:func:`PyConfig_Get("home") <PyConfig_Get>` or the
     :envvar:`PYTHONHOME` environment variable instead.
 
-.. |pythoncapi_compat_project| replace:: |pythoncapi_compat_project_link|_.
+.. |pythoncapi_compat_project| replace:: |pythoncapi_compat_project_link|_
 .. |pythoncapi_compat_project_link| replace:: pythoncapi-compat project
 .. _pythoncapi_compat_project_link: https://github.com/python/pythoncapi-compat