Adds two remaining character classes closes #973

Author: JJ

doc/Language/regexes.pod6

@@ -231,7 +231,9 @@ Examples of word characters:
     <upper>  | <:Lu>     | Uppercase characters
     <same>   |           | Matches between two identical characters
     <wb>     |           | Word Boundary
+    <ws>     |           | Whitespace. This is actually a default rule.
     <ww>     |           | Within Word
+    <ident>  |           | Identifier. Also a default rule.
 
 =end table