Fix typo in PromiseInspection API documentation.
Fix typo in PromiseInspection API documentation.

petkaantonov/bluebird,HBOCodeLabs/bluebird,justsml/bluebird,HBOCodeLabs/bluebird,justsml/bluebird,BridgeAR/bluebird,petkaantonov/bluebird,petkaantonov/bluebird,HBOCodeLabs/bluebird,BridgeAR/bluebird,BridgeAR/bluebird,justsml/bluebird