multiplexer_objstorage: Fix sphinx warning and napoleon style
On the road to make the dev build of swh-docs succeeds.
Related to swh-docs#2265 (closed)
Migrated from D5543 (view on Phabricator)
Staging instance, all changes can be removed at any time
On the road to make the dev build of swh-docs succeeds.
Related to swh-docs#2265 (closed)
Migrated from D5543 (view on Phabricator)