correct typo (should be plural form)

doc/Language/regexes.pod6

@@ -1443,7 +1443,7 @@ The use of hash variables in regexes is preserved.
 The special operator C«<?{}>» allows the evaluation of a boolean expression that can perform
 a semantic evaluation of the match before the regular expression continues. In other words, it is possible
 to check in a boolean context a part of a regular expression and therefore invalidate the whole match (or allow it
-to continue) even if the match succeed from a syntactic point of view.
+to continue) even if the match succeeds from a syntactic point of view.
 
 In particular the C«<?{}>» operator requires a C<True> value in order to allow the regular expression to match, while its
 negate form  C«<!{}>» requires a C<False> value.