editorial: normalize argument exposition across internal methods

index.bs

@@ -641,7 +641,7 @@ To support obtaining assertions via {{CredentialsContainer/get()|navigator.crede
 see [[dom#abortcontroller-api-integration]] for detailed instructions.
 
 
-This method accepts three arguments:
+This [=internal method=] accepts three arguments:
 
 <dl dfn-type="argument" dfn-for="PublicKeyCredential/[[Create]](origin, options, sameOriginWithAncestors)">
 
@@ -972,7 +972,7 @@ for="PublicKeyCredential" method>\[[CollectFromCredentialStore]](origin, options
 
 <div link-for-hint="PublicKeyCredential/[[DiscoverFromExternalSource]](origin, options, sameOriginWithAncestors)">
 
-The <code>{{PublicKeyCredential}}.<dfn for="PublicKeyCredential" method>\[[DiscoverFromExternalSource]](origin, options, sameOriginWithAncestors)</dfn></code> [=internal method=] accepts three arguments:
+This [=internal method=] accepts three arguments:
 
 <dl dfn-type="argument" dfn-for="PublicKeyCredential/[[DiscoverFromExternalSource]](origin, options, sameOriginWithAncestors)">
 
@@ -1288,7 +1288,7 @@ for Web Authentication's {{PublicKeyCredential}} type, so it always returns an e
 Note: This algorithm is synchronous; the {{Promise}} resolution/rejection is handled by
 {{CredentialsContainer/store()|navigator.credentials.store()}}.
 
-This method accepts a single argument:
+This [=internal method=] accepts two arguments:
 
 <dl dfn-type="argument" dfn-for="PublicKeyCredential/[[Store]](credential, sameOriginWithAncestors)">
     :   <dfn>credential</dfn>