Double escaping in Quick Docs for clip-path.

[RaymondLim]

1. Open Quick Docs for clip-path.

Result: Headings contain entity codes, e.g. "<shape>"

This is a bug on our end -- the original WPD page is rendered correctly.

[RaymondLim]

Nominating for sprint 28.

[njx]

Moving to sprint 29

[pthiess]

@adrocknaphobia Moving to Sprint 30

[njx]

Removing from sprint. This isn't high priority. We'll use #4763 as a placeholder for the issue that it's becoming urgent to figure out how we're going to deal with these bugs.

[RaymondLim]

Closing as this is utr in latest quick docs.