gh-106318: Add an example for str.capitalize()

Co-authored-by: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com>

Author: adorilson

Doc/library/stdtypes.rst

@@ -1763,8 +1763,8 @@ expression support in the :mod:`re` module).
 
       >>> 'PYTHON IS AMAZING'.capitalize()
       'Python is amazing'
-      >>> 'LJjubljana starts With a non-English digraph'.capitalize()
-      'Ljjubljana starts with a non-english digraph'
+      >>> 'Njemačka starts With a non-ASCII digraph'.capitalize()
+      'Njemačka starts with a non-ascii digraph'
 
    See also :meth:`title`.