Thanks for taking this on!
This PR needs to be rebased against the current version of main:
https://matplotlib.org/devdocs/devel/development_workflow.html#rebase-onto-upstream-main

And I'm pretty sure the paths of all the license files need to be updated now that they've been moved up a level.

Awesome, am waiting on doc build to check all the links.
Can you please also update https://github.com/matplotlib/matplotlib/blob/main/doc/devel/contribute.rst#contribute-documentation ?

Awesome that you caught the pre-commit. Doing a small git grep users/project these were the other paths/urls that should be changed: (urls should still work b/c of redirects but may as well do the updates together).
(mpl-dev) C:\Users\story\Projects\matplotlib>git grep "users/project"

• CODE_OF_CONDUCT.md:https://matplotlib.org/stable/users/project/code_of_conduct.html
• CODE_OF_CONDUCT.md:It is rendered from doc/users/project/code_of_conduct.rst
• README.md:entry](https://matplotlib.org/stable/users/project/citing.html) is
• CODE_OF_CONDUCT.md:https://matplotlib.org/stable/users/project/code_of_conduct.html
• CODE_OF_CONDUCT.md:It is rendered from doc/users/project/code_of_conduct.rst
• README.md:entry](https://matplotlib.org/stable/users/project/citing.html) is
• doc/devel/contribute.rst:please follow the :doc:/users/project/citing guidelines.
  • I suggest adding a .. _citing anchor to citing.rst and then changing this to :ref:citing
• doc/devel/release_guide.rst:edit :file:doc/users/project/citing.rst. Commit the new SVG, the change to
• doc/devel/release_guide.rst::file:tools/cache_zenodo_svg.py, and the changes to :file:doc/users/project/citing.rst
  doc/index.rst: users/project/index.rst
• doc/users/project/credits.rst:Please also see our instructions on :doc:/users/project/citing.
  • use the ref instead
• tools/cache_zenodo_svg.py: citing = doc_dir / "users/project/citing.rst"

And the docs readme that's already slightly out of date

• https://github.com/matplotlib/matplotlib/tree/main/doc

Also let me know if you'd like to do the updates to the brochure site or if you'd like me to. Again, b/c of the redirects the urls should still work, so it shouldn't be urgent:

• https://github.com/search?q=repo%3Amatplotlib%2Fmpl-brochure-site%20users%2Fproject&type=code