Correct misleading verbiage in 'print' hook docs.

Standardizes 'print' hook docs on the concept that hooks are fired when scripts and styles are printed.

Props ericlewis for the initial patch.
Fixes #26924.

Built from https://develop.svn.wordpress.org/trunk@27695


git-svn-id: http://core.svn.wordpress.org/trunk@27534 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/customize.php

@@ -84,14 +84,14 @@ var ajaxurl = '<?php echo admin_url( 'admin-ajax.php', 'relative' ); ?>';
 
 <?php
 /**
- * Print Customizer control styles.
+ * Fires when Customizer control styles are printed.
  *
  * @since 3.4.0
  */
 do_action( 'customize_controls_print_styles' );
 
 /**
- * Print Customizer control scripts.
+ * Fires when Customizer control scripts are printed.
  *
  * @since 3.4.0
  */