Merge pull request #7108 from sba/patch-5

docs: update errors_list template

Author: kenjis

user_guide_src/source/libraries/validation/030.php

@@ -1,7 +1,9 @@
-<div class="alert alert-danger" role="alert">
-    <ul>
-    <?php foreach ($errors as $error): ?>
-        <li><?= esc($error) ?></li>
-    <?php endforeach ?>
-    </ul>
-</div>
+<?php if (! empty($errors)): ?>
+    <div class="alert alert-danger" role="alert">
+        <ul>
+        <?php foreach ($errors as $error): ?>
+            <li><?= esc($error) ?></li>
+        <?php endforeach ?>
+        </ul>
+    </div>
+<?php endif ?>