gh-69619: fix whitespace formatting

Daniil20xx · Daniil20xx · commit ace5bd12c973 · 2026-05-18T23:43:14.000+03:00
diff --git a/Doc/library/stdtypes.rst b/Doc/library/stdtypes.rst
@@ -2748,7 +2748,7 @@ expression support in the :mod:`re` module).
    values are stripped.
 
    Whitespace characters are defined by :meth:`str.isspace`.
-   
+
    For example:
 
    .. doctest::
