Remove dot from menu_local_action button text.

Closes #3440003

src/Controller/ForumController.php

@@ -326,7 +326,7 @@ class ForumController extends ControllerBase {
         $links['login'] = [
           '#theme' => 'menu_local_action',
           '#link' => [
-            'title' => $this->t('Log in to post new content in the forum.'),
+            'title' => $this->t('Log in to post new content in the forum'),
             'url' => Url::fromRoute('user.login', [], ['query' => $this->getDestinationArray()]),
           ],
           // Without this workaround, the action links will be rendered as <li>