Fixed web-api.md
Fixed web-api.md


Former-commit-id: 96e9534db59af3a23b8c98fcd781ede4b476f843 [formerly 96e9534db59af3a23b8c98fcd781ede4b476f843 [formerly 1a2ded2f94a8028f8c38f86a0279f63298145b52]]
Former-commit-id: 103afb87da12559b3f3f07398c35e43e5463b23c
Former-commit-id: 8f36974665cf30d456b151190b360296233619ca
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine