Resolve "Invite a user to clowm via email"

Closes #9 (closed)

clowm/api/endpoints/s3key.py

@@ -61,7 +61,7 @@ async def get_user_keys(
     """
     trace.get_current_span().set_attribute("uid", str(user.uid))
     if current_user.uid != user.uid:
-        raise HTTPException(status.HTTP_403_FORBIDDEN, detail="Action forbidden.")
+        raise HTTPException(status.HTTP_403_FORBIDDEN, detail="Action forbidden")
     authorization(RBACOperation.LIST)
     return get_s3_keys(rgw, user.uid)