Fixed the manual [skip CI]
Fixed the manual [skip CI]


Former-commit-id: a18a1299e9c15b407f3bb9b63f1f34bd607d8914 [formerly b62333eec97226ba24abe3858e71849646e1e5d7]
Former-commit-id: 907b21fc311d7c382b99054e5581c80cea5544bf
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine