Twenty Fifteen: Document the $more parameter in `twentyfifteen_exce…

…rpt_more()`.

Follow-up to [30237], [30569].

Props pitamdey, sabernhardt.
See #62079.

git-svn-id: https://develop.svn.wordpress.org/trunk@59110 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-content/themes/twentyfifteen/inc/template-tags.php

@@ -256,6 +256,7 @@ function twentyfifteen_get_link_url() {
 	 *
 	 * @since Twenty Fifteen 1.0
 	 *
+	 * @param string $more Default Read More excerpt link.
 	 * @return string 'Continue reading' link prepended with an ellipsis.
 	 */
 	function twentyfifteen_excerpt_more( $more ) {