pythongh-92368: Fix missing possessive apostrophe (pythonGH-92397)

* Fix missing possessive apostrophe
(cherry picked from commit a79001e)

Co-authored-by: gophra <105054704+gophra@users.noreply.github.com>

Doc/tutorial/stdlib.rst

@@ -327,7 +327,7 @@ Python has a "batteries included" philosophy.  This is best seen through the
 sophisticated and robust capabilities of its larger packages. For example:
 
 * The :mod:`xmlrpc.client` and :mod:`xmlrpc.server` modules make implementing
-  remote procedure calls into an almost trivial task.  Despite the modules
+  remote procedure calls into an almost trivial task.  Despite the modules'
   names, no direct knowledge or handling of XML is needed.
 
 * The :mod:`email` package is a library for managing email messages, including