Hi,
just updated to Tuleap 11.8.99.50 and noticed that the notification that shows up on the administration section, with instructions to run the "forgeupgrade" command, includes a link "upgrade documentation" that points to https://tuleap-documentation.readthedocs.io/en/latest/installation-guide/update.html which no longer exists.
I'm guessing it should point to /doc/en/installation-guide/update.html on the local documentation or the publicly available at https://docs.tuleap.org/installation-guide/update.html.