fix

9-regular-expressions/02-regexp-character-classes/article.md

@@ -153,7 +153,7 @@ Luckily, there's an alternative, that works everywhere. We can use a regexp like
 alert( "A\nB".match(/A[\s\S]B/) ); // A\nB (match!)
 ```
 
-The pattern `regexp:[\s\S]` literally says: "a space character OR not a space character", that is "anything".
+The pattern `pattern:[\s\S]` literally says: "a space character OR not a space character", that is "anything".
 
 This works everywhere. Also we can use it if we don't want to use `pattern:s` flag, in cases when we want a regular "no-newline" dot too in the pattern.
 ````