Fix T37447: Add a link to project list when creating tasks.

src/applications/maniphest/controller/ManiphestTaskEditController.php

@@ -638,6 +638,17 @@ final class ManiphestTaskEditController extends ManiphestController {
     }
 
     if ($can_edit_projects) {
+      $projects_caption = phutil_tag(
+        'span',
+        array(),
+          array(
+            'Add relevant ',
+            phutil_tag(
+              'a',
+              array('href'  => '/project/query/active/', 'target' => '_blank'),
+              'project tags'),
+            ' here. In most cases you need to add at least one of BF Blender, Game Engine, Addons or Websites.'));
+
       $form
         ->appendChild(
           id(new AphrontFormTokenizerControl())
@@ -645,7 +656,7 @@ final class ManiphestTaskEditController extends ManiphestController {
             ->setName('projects')
             ->setValue($projects_value)
             ->setID($project_tokenizer_id)
-            ->setCaption(pht('Add relevant projects tags here. In most cases you need to add at least one of BF Blender, Game Engine, Addons or Websites.'))
+            ->setCaption($projects_caption)
             ->setDatasource('/typeahead/common/projects/'));
     }