Merge pull request #6560 from tobiasd/20190130-doc

Wrong constant used in docs

doc/Config.md

@@ -142,7 +142,7 @@ $a->config['register_policy'] = REGISTER_CLOSED;
 </pre></td>
                     <td><pre>
 'config' => [
-    'register_policty' => REGISTER_CLOSED,
+    'register_policy' => \Friendica\Module\Register::CLOSED,
 ],
 </pre></td>
         </tr>
@@ -242,7 +242,7 @@ register_policty = REGISTER_CLOSED
 </pre></td>
         			<td><pre>
 'config' => [
-    'register_policty' => REGISTER_CLOSED,
+    'register_policy' => \Friendica\Module\Register::CLOSED,
 ],
 </pre></td>
         </tr>