Uzwername

### MDN URL https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/frame-ancestors ### What specific section or headline is this issue about? https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/frame-ancestors#syntax ### What information was incorrect, unhelpful, or incomplete? Currently, [the syntax section](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/frame-ancestors#syntax) states the following:...