Fix the automatic docsite_pr label (#37999) (#38351)

(cherry picked from commit cdf9e39647)

docs/docsite/_themes/sphinx_rtd_theme/breadcrumbs.html

@@ -3,11 +3,11 @@
   <li><a href="">{{ title }}</a></li>
   {% if pagename.endswith('_module') %}
     <li class="wy-breadcrumbs-aside">
-      <a href="https://github.com/ansible/ansible/edit/devel/lib/ansible/modules/{{ meta.get('source', '') }}?description=%3C!---%20Your%20description%20here%20--%3E%0A%0A+label:%20docsite_pr" class="icon icon-github"> Edit on GitHub</a>
+      <a href="https://github.com/ansible/ansible/edit/devel/lib/ansible/modules/{{ meta.get('source', '') }}?description=%3C!---%20Your%20description%20here%20--%3E%0A%0A%2Blabel:%20docsite_pr" class="icon icon-github"> Edit on GitHub</a>
     </li>
   {% elif (not 'list_of' in pagename) and (not 'category' in pagename) %}
     <li class="wy-breadcrumbs-aside">
-      <a href="https://github.com/ansible/ansible/edit/devel/docs/docsite/rst/{{ pagename }}.rst?description=%3C!---%20Your%20description%20here%20--%3E%0A%0A+label:%20docsite_pr" class="icon icon-github"> Edit on GitHub</a>
+      <a href="https://github.com/ansible/ansible/edit/devel/docs/docsite/rst/{{ pagename }}.rst?description=%3C!---%20Your%20description%20here%20--%3E%0A%0A%2Blabel:%20docsite_pr" class="icon icon-github"> Edit on GitHub</a>
     </li>
   {% endif %}
 </ul>

docs/templates/plugin.rst.j2

@@ -399,4 +399,4 @@ Author
 {% endif %}
 
 .. hint::
-    If you notice any issues in this documentation you can `edit this document <https://github.com/ansible/ansible/edit/devel/lib/ansible/modules/@{ source }@?description=%3C!---%20Your%20description%20here%20--%3E%0A%0A+label:%20docsite_pr>`_ to improve it.
+    If you notice any issues in this documentation you can `edit this document <https://github.com/ansible/ansible/edit/devel/lib/ansible/modules/@{ source }@?description=%3C!---%20Your%20description%20here%20--%3E%0A%0A%2Blabel:%20docsite_pr>`_ to improve it.