url tags do not work within partial tags #2422
Description
I'm submitting a...
[x] Bug report
[ ] Content update
[ ] Process update (build, deployment, ... )
Type of bug / changes
When trying to place a url tag within a partial tag, an error is thrown
This is due to this.site being undefined within partial tags on this line:
https://github.com/cypress-io/cypress-documentation/blob/develop/lib/tags/url.js#L6:L6