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


Former-commit-id: e53c981e727ddbb39b1b58f7ff324924e1325f04 [formerly d12ef723294bbb3ccfa9c70ba41e440e2fcaa5d0]
Former-commit-id: 5fa568e8441176bd6fb308a515efb22db2c7bd10
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine