gh-106318: Fix typo in the str.isnumeric() method docs

Author: adorilson

Doc/library/stdtypes.rst

@@ -2320,7 +2320,7 @@ expression support in the :mod:`re` module).
 
       >>> '0123456789'.isnumeric()
       True
-      >>> '٠١٢٣٤٥٦٧٨٩'.isnumeric()  # Arabic-indic digit zero to nine
+      >>> '٠١٢٣٤٥٦٧٨٩'.isnumeric()  # Arabic-indic digits zero to nine
       True
       >>> '⅕'.isnumeric()  # Vulgar fraction one fifth
       True