Merge pull request WordPress#2604 from rodrigoprimo/alternative-functions-fix-typo

WP/AlternativeFunctions: fix typo in code comment

Author: jrfnl

WordPress/Sniffs/WP/AlternativeFunctionsSniff.php

@@ -259,7 +259,7 @@ public function process_matched_token( $stackPtr, $group_name, $matched_content
 			case 'file_get_contents':
 				/*
 				 * Using `wp_remote_get()` will only work for remote URLs.
-				 * See if we can determine is this function call is for a local file and if so, bow out.
+				 * See if we can determine if this function call is for a local file and if so, bow out.
 				 */
 				$params = PassedParameters::getParameters( $this->phpcsFile, $stackPtr );