Fix the link to “Backtracking”

Resolves #628.

Author: AlexDaniel

doc/Language/glossary.pod6

@@ -202,7 +202,7 @@ Backtracking is the default way a regexp is matched. The engine
 is allowed to explore several ways moving backward in the string
 characters in order to allow every piece of a regexp
 to match something.
-For more information see L<Regexp Backtracking section|/language/regexes#backtracking>.
+For more information see L<Regexp Backtracking section|/language/regexes#Backtracking>.
 
 =head1 binder