Coding-Standard-Tutorial: fix typo

Author: jrfnl

wiki/Coding-Standard-Tutorial.md

@@ -128,7 +128,7 @@ final class DisallowHashCommentsSniff implements Sniff
 }
 ```
 
-By default, PHP_CodeSniffer assumes all sniffs are designed to check PHP code only. You can specify a list of tokenizers that your sniff supports, allowing it to be used wth PHP, JavaScript or CSS files, or any combination of the three. You do this by setting the `$supportedTokenizers` property in your sniff. Adding the following code to your sniff will tell PHP_CodeSniffer that it can be used to check both PHP and JavaScript code:
+By default, PHP_CodeSniffer assumes all sniffs are designed to check PHP code only. You can specify a list of tokenizers that your sniff supports, allowing it to be used with PHP, JavaScript or CSS files, or any combination of the three. You do this by setting the `$supportedTokenizers` property in your sniff. Adding the following code to your sniff will tell PHP_CodeSniffer that it can be used to check both PHP and JavaScript code:
 
 ```php
 /**