Updated the ecosystem page with Django Tasks changes. (#2519)

* Updated the ecosystem page with Django Tasks changes.

Changes the mention of django-tasks state that it's a backport
library. It also adds the two supported backends, db and RQ to
the page.

* Use the django tasks package names instead of human names.

Author: tim-schilling

djangoproject/templates/aggregator/ecosystem.html

@@ -326,8 +326,16 @@ <h3 id="tasks">
   </h3>
   <ul>
     <li>
-      <a href="https://github.com/RealOrangeOne/django-tasks">Django Tasks</a>
-      &mdash; A lightweight task queue for Django applications, suitable for simple background task processing.
+      <a href="https://github.com/RealOrangeOne/django-tasks-db">django-tasks-db</a>
+      &mdash; A lightweight task queue for Django applications, with an ORM-based backend, suitable for simple background task processing.
+    </li>
+    <li>
+      <a href="https://github.com/RealOrangeOne/django-tasks-rq">django-tasks-rq</a>
+      &mdash; A lightweight task queue for Django applications, with an <a href="https://python-rq.org/">RQ-based</a> backend, suitable for simple background task processing.
+    </li>
+    <li>
+      <a href="https://github.com/RealOrangeOne/django-tasks">django-tasks</a>
+      &mdash; A backport of <code>django.tasks</code> - Django's built-in <a href="https://docs.djangoproject.com/en/stable/topics/tasks/">Tasks framework</a>.
     </li>
   </ul>