Docs: Increase the specificity of various docblock parameter types and return types.

See #48303
Built from https://develop.svn.wordpress.org/trunk@46823


git-svn-id: http://core.svn.wordpress.org/trunk@46623 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/class-wp-customize-nav-menus.php

@@ -39,7 +39,7 @@ final class WP_Customize_Nav_Menus {
 	 *
 	 * @since 4.3.0
 	 *
-	 * @param object $manager An instance of the WP_Customize_Manager class.
+	 * @param WP_Customize_Manager $manager An instance of the WP_Customize_Manager class.
 	 */
 	public function __construct( $manager ) {
 		$this->manager                     = $manager;