Fix typo

doc/Language/regexes.pod6

@@ -1872,7 +1872,7 @@ the distinction clear.
 
 In the first example, the matching adverb (C<:exhaustive>) is contiguous to the
 regex adverb (C<:i>), and as a matter of fact, the "definition" and the
-"matching" go together; however, by using C<match> it becomes clear than C<:i>
+"matching" go together; however, by using C<match> it becomes clear that C<:i>
 is only used when defining the C<$regex> variable, and C<:ex> (short for
 C<:exhaustive>) as an argument when matching. As a matter of fact, matching
 adverbs cannot even be used in the definition of a regex: