Issue #1977644 by ifrik, batigolix: Update Ban module hook_help to help...

Issue #1977644 by ifrik, batigolix: Update Ban module hook_help to help standards by adding link to online docs

core/modules/ban/ban.module

@@ -13,7 +13,7 @@ function ban_help($path, $arg) {
     case 'admin/help#ban':
       $output = '';
       $output .= '<h3>' . t('About') . '</h3>';
-      $output .= '<p>' . t('The Ban module allows administrators to ban visits to their site from individual IP addresses.') . '</p>';
+      $output .= '<p>' . t('The Ban module allows administrators to ban visits to their site from individual IP addresses. For more information, see <a href="@url">the online documentation for the Ban module</a>.', array('@url' => 'https://drupal.org/documentation/modules/ban')) . '</p>';
       $output .= '<h3>' . t('Uses') . '</h3>';
       $output .= '<dl>';
       $output .= '<dt>' . t('Banning IP addresses') . '</dt>';