fix #1277: webauthn -> publickey-credentials

index.bs

@@ -2893,7 +2893,7 @@ needs.
 ## Feature Policy integration ## {#sctn-feature-policy}
 
 This specification defines a [=policy-controlled feature=] identified by
-the feature policy token "<code><dfn data-lt="webauthn-feature" export>webauthn</dfn></code>".
+the feature-identifier token "<code><dfn data-lt="webauthn-feature" export>publickey-credentials</dfn></code>".
 Its [=default allowlist=] is '<code>self</code>'. [[!Feature-Policy]]
 
 A {{Document}}'s [=Document/feature policy=] determines whether any content in that <a href="https://html.spec.whatwg.org/multipage/dom.html#documents">document</a> is allowed