Revert unlinking doc

Author: StanFromIreland

Doc/whatsnew/3.9.rst

@@ -1139,7 +1139,7 @@ Changes in the Python API
   (Contributed by Christian Heimes in :issue:`36384`).
 
 * :func:`codecs.lookup` now normalizes the encoding name the same way as
-  :func:`!encodings.normalize_encoding`, except that :func:`codecs.lookup` also
+  :func:`encodings.normalize_encoding`, except that :func:`codecs.lookup` also
   converts the name to lower case. For example, ``"latex+latin1"`` encoding
   name is now normalized to ``"latex_latin1"``.
   (Contributed by Jordon Xu in :issue:`37751`.)