Re: [webauthn] #registering-a-new-credential step 10 breakage

refining/fixing suggestion for step 10:
```
10. Verify that |attStmt| is a correct [=attestation statement=], conveying 
a valid [=attestation signature=], by 
using the [=attestation statement format=] |fmt|'s
verification procedure, given |attStmt|, [=authenticator data=] |authData| 
and the [=hash of the serialized client data=] computed in step 6.
Each [=attestation statement format=]'s verification procedure is given by
the format's specification. See [[#defined-attestation-formats]] for the initially-
defined formats, and [[!WebAuthn-Registries]] for the up-to-date list.
```

need to also fix the ags defined in [#verification-procedures](http://w3c.github.io/webauthn/#verification-procedures) to match.

the [#verification-procedures](http://w3c.github.io/webauthn/#verification-procedures) may also need the RP's expected RP ID value passed-in.


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Received on Monday, 11 September 2017 23:13:16 UTC