Use \c: point of the example

Author: ajs

doc/Language/regexes.pod6

@@ -300,7 +300,7 @@ will generally not match individually. For example if you compose
 C<"ü"> as C<"u\x[0308]">, that works just fine, but matching may surprise
 you:
 
-     say "u\x[0308]" ~~ /u/;    # OUTPUT: «Nil»
+     say "u\x[0308]" ~~ /\c[LATIN SMALL LETTER U]/;    # OUTPUT: «Nil»
 
 To match the unmodified character, you can use the
 L<C<:ignoremark>|#regex adverb,:ignoremark> adverb.