[3.14] Docs: Prepare for Sphinx 9 (GH-142057) (#142091)

Co-authored-by: Adam Turner <9087854+AA-Turner@users.noreply.github.com>

Author: miss-islington

Doc/howto/urllib2.rst

@@ -15,7 +15,7 @@ Introduction
     You may also find useful the following article on fetching web resources
     with Python:
 
-    * `Basic Authentication <https://web.archive.org/web/20201215133350/http://www.voidspace.org.uk/python/articles/authentication.shtml>`_
+    * `Basic Authentication <https://web.archive.org/web/20201215133350/http://www.voidspace.org.uk/python/articles/authentication.shtml>`__
 
         A tutorial on *Basic Authentication*, with examples in Python.
 

Doc/library/socket.rst

@@ -2086,11 +2086,8 @@ to sockets.
       :attr:`socket.type`.
 
 
-.. method:: socket.setsockopt(level, optname, value: int)
-.. method:: socket.setsockopt(level, optname, value: buffer)
-   :noindex:
-.. method:: socket.setsockopt(level, optname, None, optlen: int)
-   :noindex:
+.. method:: socket.setsockopt(level, optname, value: int | Buffer)
+            socket.setsockopt(level, optname, None, optlen: int)
 
    .. index:: pair: module; struct
 

Doc/tools/extensions/glossary_search.py

@@ -38,7 +38,7 @@ def process_glossary_nodes(
             rendered = app.builder.render_partial(definition)
             terms[term.lower()] = {
                 'title': term,
-                'body': rendered['html_body'],
+                'body': rendered['fragment'],
             }