Apply suggestions from code review

Co-authored-by: Bénédikt Tran <10796600+picnixz@users.noreply.github.com>

Author: hugovk

Doc/library/textwrap.rst

@@ -102,7 +102,7 @@ functions should be good enough; otherwise, you should use an instance of
           print(repr(s))          # prints '    hello\n      world\n    '
           print(repr(dedent(s)))  # prints 'hello\n  world\n'
 
-   .. versionchanged:: next
+   .. versionchanged:: 3.14
       The :func:`!dedent` function now correctly normalizes blank lines containing
       only whitespace characters. Previously, the implementation only normalized
       blank lines containing tabs and spaces.

Doc/whatsnew/3.14.rst

@@ -2273,6 +2273,7 @@ textwrap
   and fix a bug with incomplete normalization of blank lines with whitespace
   characters other than space and tab.
 
+
 uuid
 ----