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.


git-svn-id: https://develop.svn.wordpress.org/trunk@27695 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-includes/media-template.php

@@ -1029,7 +1029,7 @@ function wp_print_media_templates() {
 	<?php
 
 	/**
-	 * Prints the media manager custom media templates.
+	 * Fires when the custom Backbone media templates are printed.
 	 *
 	 * @since 3.5.0
 	 */