[w3c/manifest] PromptResponseObject definition is missing in "IDL Index" (#637)

In [IDL Index](https://w3c.github.io/manifest/#idl-index) section, [PromptResponseObject](https://w3c.github.io/manifest/#beforeinstallpromptevent-interface) definition is missing.

-- 
You are receiving this because you are subscribed to this thread.
Reply to this email directly or view it on GitHub:
https://github.com/w3c/manifest/issues/637

Received on Wednesday, 10 January 2018 01:46:25 UTC