Updated a docstring [skip CI]
Updated a docstring [skip CI]


Former-commit-id: 880442553fae2d5ad909c968719848a62c2a104c [formerly c5aebd1d411f195ab16d250e4ba67655e6ca38cb]
Former-commit-id: 0c4357ba395aaebb3645c9347b9377f773326358
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine