documentation updates per code review

Author: dougthor42

Doc/whatsnew/3.15.rst

@@ -99,6 +99,7 @@ difflib
   This can be controlled by :ref:`environment variables
   <using-on-controlling-color>`.
   (Contributed by Douglas Thor in :gh:`133725`.)
+
 * Improved the styling of HTML diff pages generated by the :class:`difflib.HtmlDiff`
   class, and migrated the output to the HTML5 standard.
   (Contributed by Jiahao Li in :gh:`134580`.)

Lib/difflib.py

@@ -1112,9 +1112,9 @@ def unified_diff(a, b, fromfile='', tofile='', fromfiledate='',
     For inputs that do not have trailing newlines, set the lineterm
     argument to "" so that the output will be uniformly newline free.
 
-   Set *color* to ``True`` to enable output in color, similar to
-   :program:`git diff --color`. Even if enabled, it can be
-   :ref:`controlled using environment variables <using-on-controlling-color>`.
+    Set 'color' to True to enable output in color, similar to
+    'git diff --color'. Even if enabled, it can be
+    controlled using environment variables such as 'NO_COLOR'.
 
     The unidiff format normally has a header for filenames and modification
     times.  Any or all of these may be specified using strings for