fix typo in docs
fix typo in docs


Former-commit-id: 76ad8cf8719c35bd6677cba446d7dd1521b67c0d
Former-commit-id: 82fd61feb83b377d0d0f925715f477c76f44925a
Former-commit-id: d8b44ecf04768106dd080c7076bc1d65f4672ed3
dssg/wikienergy,dssg/wikienergy,dssg/wikienergy,dssg/wikienergy,dssg/wikienergy