Update development.md
Update development.md

Former-commit-id: 17b58a480dab04bdeece9a79aa1567a9384997cf [formerly 98a907696a0fe02896266253dbfc8f861185bc68]
Former-commit-id: 53146a79b67aea790efb768d63de1aab8babf99e
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine