Fix typo. Props johnbillion. fixes #4057

git-svn-id: https://develop.svn.wordpress.org/trunk@5176 602fd350-edb4-49c9-b593-d223f7449a82

wp-content/themes/classic/functions.php

@@ -1,5 +1,5 @@
 <?php
-if ( function_exists('register_sidebars') )
+if ( function_exists('register_sidebar') )
 	register_sidebar(array(
         'before_widget' => '<li id="%1$s" class="widget %2$s">',
         'after_widget' => '</li>',
@@ -7,4 +7,4 @@ if ( function_exists('register_sidebars') )
         'after_title' => '',
     ));
 
-?>
+?>