Better i18n string for feed submenu for mark as read (#5762)

* Update aside_feed.phtml

* Revert "Update aside_feed.phtml"

This reverts commit b406229e24eecfb2b9b35ead425d6e291b95f5d5.

* Update aside_feed.phtml

---------

Co-authored-by: math-gh <>

app/layout/aside_feed.phtml

@@ -174,7 +174,7 @@
 			<button class="read_all as-link <?= $confirm ?>"
 				form="mark-read-aside"
 				formaction="<?= _url('entry', 'read', 'get', 'f_------') ?>"
-				type="submit"><?= _t('gen.action.mark_read') ?></button>
+				type="submit"><?= _t('index.menu.mark_feed_read') ?></button>
 		</li>
 		<?php } ?>
 	</ul>