Documentation search page subproject display is incorrect

[agjohnson]

When searching for a term on our documentation, the search headings now have information from the wrong search index

For example:

The addition of "(from project docs)" should only happen on a superproject search. This text indicates the project slug that the search results came from. Something might have changed with the search JS, or potentially our search index code.

[stsewd]

Isn't this a duplicate of #3792?

[agjohnson]

Yup!