Update banner.html

Author: alina-derkach-oaza

_resource/overrides/partials/banner.html

@@ -4,8 +4,8 @@
 
     <div class="actions">
 
-    <a href="https://docs.percona.com/percona-server/8.0/get-help.html" target="_blank" style="color: var(--md-typeset-a-color);">Get help from Percona</a>
+    <a href="https://docs.percona.com/percona-server/8.0/get-help.html" style="color: var(--md-typeset-a-color);">Get help from Percona</a>
     </div>
     </div>
 
-    
+