[3.12] Remove excessive backticks in logging doc (GH-123813) (#123817)

Remove excessive backticks in logging doc (GH-123813)
(cherry picked from commit 93050e4)

Co-authored-by: Wei-Hsiang (Matt) Wang <[email protected]>

Author: miss-islington

Doc/library/logging.rst

@@ -1094,11 +1094,11 @@ information into logging calls. For a usage example, see the section on
 
    .. attribute:: manager
 
-      Delegates to the underlying :attr:`!manager`` on *logger*.
+      Delegates to the underlying :attr:`!manager` on *logger*.
 
    .. attribute:: _log
 
-      Delegates to the underlying :meth:`!_log`` method on *logger*.
+      Delegates to the underlying :meth:`!_log` method on *logger*.
 
    In addition to the above, :class:`LoggerAdapter` supports the following
    methods of :class:`Logger`: :meth:`~Logger.debug`, :meth:`~Logger.info`,