The page at https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Feature-Policy/vibrate and https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Feature-Policy refer to a Feature Policy “vibrate” that doesn’t exist per the spec (https://w3c.github.io/webappsec-feature-policy/) and has had bugs raised (https://bugs.chromium.org/p/chromium/issues/detail?id=911042 and https://github.com/w3c/webappsec-feature-policy/issues/263) to remove from examples.
Should the Directive page be deleted or marked as not per spec?