[webauthn] update FIDO spec references to link to latest revisions

equalsJeffH has just created a new issue for https://github.com/w3c/webauthn:

== update FIDO spec references to link to latest revisions ==
for all FIDO spec refs in the [webauthn spec](https://w3c.github.io/webauthn/), if the ref'd FIDO spec can be found amongst the specs presented in https://fidoalliance.org/specs/fido-v2.0-id-20180227/, then update the ref in webauthn spec to point to the FIDO spec in [the latter collection](https://fidoalliance.org/specs/fido-v2.0-id-20180227/).

Please view or discuss this issue at https://github.com/w3c/webauthn/issues/898 using your GitHub account

Received on Tuesday, 8 May 2018 17:38:23 UTC