regexes.pod6 change predefined <|wb>, <ww> to <?wb>, <?ww>

Author: ronaldxs

doc/Language/regexes.pod6

@@ -195,8 +195,8 @@ Predefined subrules:
     <punct>            Punctuation and Symbols (only Punct beyond ASCII)
     <space>   \s       Whitespace
     <upper>   <:Lu>    Uppercase characters
-    <|wb>               Word Boundary (zero-width assertion)
-    <ww>               Within Word (zero-width assertion)
+    <?wb>              Word Boundary (zero-width assertion, ? suppress capture)
+    <?ww>              Within Word (zero-width assertion, ? suppress capture)
     <xdigit>           Hexadecimal digit [0-9A-Fa-f]
     =end code