fix the code location for the doc tree …

It doesn't need fixing, we might need to contact them.

What works for the src tree (in the first screenshot below) does not work for the doc tree (second shot).

The previous repo URL was the cgit URL. Before I removed it, today, IIRC there was the same red alert:

Error: This Code Location is flagged as Do Not Fetch. Please contact us for assistance

– with the same status:

Step 1 of 3: Downloading source code history (Failed about 2 years ago.)

There's an on-screen suggestion to wait twenty-four hours. I will wait, although given the failure about two years ago: I doubt that it'll make a difference.

There's a suggestion of "special handling" in the help forum. There's also no response to a report that someone made more than five months ago, which is not particularly special