Fix some grammar issues and typos

Author: jrfnl

wiki/Annotated-Ruleset.md

@@ -300,7 +300,7 @@ The following sample file documents the ruleset.xml format and shows you the com
     Array values are specified by using "element" tags
     with "key" and "value" attributes.
 
-    NOTE: This syntax is is only supported in PHP_CodeSniffer
+    NOTE: This syntax is only supported in PHP_CodeSniffer
     versions 3.3.0 and greater.
  -->
  <rule ref="Generic.PHP.ForbiddenFunctions">

wiki/Coding-Standard-Tutorial.md

@@ -123,7 +123,7 @@ 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 XML files, or any combination of the three. You do this by setting the `$supportedTokenizers` member variable in your sniff. Adding the following code to your sniff will tell PHP_CodeSniffer that it can be used to check both PHP and JavaScript code:
+By default, PHP_CodeSniffer assumes all sniffs are designed to check PHP code only. You can specify a list of tokenizers that your sniff supports, allowing it to be used wth PHP, JavaScript or CSS files, or any combination of the three. You do this by setting the `$supportedTokenizers` member variable 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
 /**
@@ -132,9 +132,9 @@ By default, PHP_CodeSniffer assumes all sniffs are designed to check PHP code on
  * @var array
  */
 public $supportedTokenizers = array(
-                               'PHP',
-                               'JS',
-                              );
+    'PHP',
+    'JS',
+);
 ```