Hardcode hosted URL for now

Author: humitos

hoverxref/domains.py

@@ -48,7 +48,9 @@ def _inject_hoverxref_data(self, env, refnode, typ, docname, docpath, labelid):
         url = refnode.get('refuri')
         if url:
             refnode._hoverxref.update({
-                'data-url': url,
+                # FIXME: data-url requires to use the full URL here. At this
+                # point, we need to know the domain where the project is hosted
+                'data-url': f'https://sphinx-hoverxref--146.org.readthedocs.build/en/146/{url}',
             })
         else:
             logger.info(