Fix link to version states documentation (#8475)

Author: astrojuanlu

readthedocs/templates/projects/project_version_states_help_text.html

@@ -1,7 +1,7 @@
 {% load i18n %}
 
 <p>
-  {% blocktrans trimmed with docs_link="https://docs.readthedocs.io/page/versions.html#states" %}
+  {% blocktrans trimmed with docs_link="https://docs.readthedocs.io/page/versions.html#version-states" %}
     Learn more about states <a href="{{ docs_link }}">here</a>.
   {% endblocktrans %}
 </p>