Re: [webauthn] Fix all linking errors and address isue 439

Below are the changes: 
- Change all RP instances to [=[RP]=] to fix a linking error. 
- Change {{Credential/[[discovery]]}}  to <dfn>\[[discovery]]</dfn>. This is to be consistent with the `type` change. 
- Change |attachment| to {{AuthenticatorSelectionCriteria/attachment}} and |requireResidentKey| to {{AuthenticatorSelectionCriteria/attachment}}. This fixes another linking error. 

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GitHub Notification of comment by AngeloKai
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Received on Thursday, 4 May 2017 22:49:01 UTC