minor tweaks to spacing.

system/file.php

@@ -1,11 +1,11 @@
 <?php namespace System;
 
 class File {
-	
+
 	/**
 	 * Get a file's extension. 
 	 * 
-	 * @param  string $path
+	 * @param  string  $path
 	 * @return string
 	 */
 	public static function extension($path)