python3-discid fails to build with Sphinx 6.1.3 in Fedora 39 (currently Rawhide).

For the logs from testing build attempts, see:
https://copr.fedorainfracloud.org/coprs/ksurma/sphinx-6.1.3/package/python3-discid/

You can test you package in mock running:

$ mock -r fedora-rawhide-x86_64 --addrepo=https://download.copr.fedorainfracloud.org/results/ksurma/sphinx-6.1.3/fedora-rawhide-x86_64/ --no-clean your.src.rpm
$ mock -r fedora-rawhide-x86_64 --addrepo=https://download.copr.fedorainfracloud.org/results/ksurma/sphinx-6.1.3/fedora-rawhide-x86_64/ shell

The issue detected:

Exception occurred:
File "/usr/lib/python3.11/site-packages/sphinx/ext/extlinks.py", line 103, in role
title = caption % part
        ~~~~~~~~^~~~~~
TypeError: not all arguments converted during string formatting

It's an error in configuration.
To resolve, edit the documentation `conf.py` and correct the `extlinks` definition to contain exactly one `%s` in the captions, eg.

Bad:
'github': ('https://github.com/%s', '')

Good:
'github': ('https://github.com/%s', '%s')

Sphinx 6.1.3 will be included in Fedora 39.
Let us know here if you have any questions. Thank you!