Docs: Remove extra dot from some @since tags.

Props hardik-amipara.
Fixes #42899.

git-svn-id: https://develop.svn.wordpress.org/trunk@42400 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-admin/js/accordion.js

@@ -25,7 +25,7 @@
  *
  * Note that any appropriate tags may be used, as long as the above classes are present.
  *
- * @since 3.6.0.
+ * @since 3.6.0
  */
 
 ( function( $ ){

src/wp-admin/options-discussion.php

@@ -91,7 +91,7 @@ printf(
 /**
  * Filters the maximum depth of threaded/nested comments.
  *
- * @since 2.7.0.
+ * @since 2.7.0
  *
  * @param int $max_depth The maximum depth of threaded comments. Default 10.
  */

src/wp-includes/link-template.php

@@ -3742,7 +3742,7 @@ function rel_canonical() {
  * via the {@see 'pre_get_shortlink'} filter or filter the output via the {@see 'get_shortlink'}
  * filter.
  *
- * @since 3.0.0.
+ * @since 3.0.0
  *
  * @param int    $id          Optional. A post or site id. Default is 0, which means the current post or site.
  * @param string $context     Optional. Whether the id is a 'site' id, 'post' id, or 'media' id. If 'post',