Fixed a docstring
Fixed a docstring


Former-commit-id: 8ca20c1fa725a61429a2adb112ea08f966de169d [formerly 5dc0c39615ff56c34051c7566605a221cd6d6fc2]
Former-commit-id: 1e2e300665602d782e8bea5362281a2b2085fef3
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine