Cleaned up bin/openquake doc string (printed by --help)
Cleaned up bin/openquake doc string (printed by --help)


Former-commit-id: 0e6734f7cb9c7fb382c0ed231f843e0dc3f8191d [formerly 62a844a9702b43d0f98ab148410442a7de6e835b]
Former-commit-id: 6be93f2543dfde4aa6d574d78b35b71e75231820
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine