add gradle-docker-plugin, update docker-client url

Signed-off-by: Tobias Gesellchen <tobias@gesellix.de>

docs/reference/api/remote_api_client_libraries.md

@@ -67,10 +67,16 @@ will add the libraries here.
       <td><a class="reference external" href="https://github.com/samalba/dockerclient">https://github.com/samalba/dockerclient</a></td>
       <td>Active</td>
     </tr>
+    <tr>
+      <td>Gradle</td>
+      <td>gradle-docker-plugin</td>
+      <td><a class="reference external" href="https://github.com/gesellix/gradle-docker-plugin">https://github.com/gesellix/gradle-docker-plugin</a></td>
+      <td>Active</td>
+    </tr>
     <tr>
       <td>Groovy</td>
       <td>docker-client</td>
-      <td><a class="reference external" href="https://github.com/gesellix-docker/docker-client">https://github.com/gesellix-docker/docker-client</a></td>
+      <td><a class="reference external" href="https://github.com/gesellix/docker-client">https://github.com/gesellix/docker-client</a></td>
       <td>Active</td>
     </tr>
     <tr>