Fix lint

Author: ericholscher

readthedocs/builds/models.py

@@ -277,7 +277,9 @@ def get_absolute_url(self):
         # TODO: We can integrate them into the resolver
         # but this is much simpler to handle since we only link them a couple places for now
         if self.type == EXTERNAL:
-            url = f"{settings.EXTERNAL_VERSION_URL}/html/{self.project.slug}/{self.slug}/"
+            url = f'{settings.EXTERNAL_VERSION_URL}/html/' \
+                f'{self.project.slug}/{self.slug}/'
+            # Django's static file serving doesn't automatically append index.html
             if settings.DEBUG:
                 url += 'index.html'
             return url