Fix labextension plugin IDs in the docs

[lahwaacz]

See #1749 (reply in thread)

[github-actions]

👈 Launch a Binder on branch lahwaacz/nbgrader/fix-docs

[brichet]

Fixes also #1810

[brichet]

Thanks @lahwaacz.

There is also one plugin name not updated in the demos (the other ones have been updated already). Can you fix it in this PR ?

nbgrader/demos/restart_demo.sh

Line 80 in f37eede

jupyter labextension enable --level=sys_prefix nbgrader/validate_assignment

[lahwaacz]

@brichet Done.

[lahwaacz]

@brichet Some UI tests failed, but I don't think that's my fault. Can you help?

[brichet]

@brichet Some UI tests failed, but I don't think that's my fault. Can you help?

This is related to a broken version of jupyterlab/galata (the test helper) in jupyterlab==4.0.4 and jupyterlab==4.0.5.
https://github.com/jupyterlab/jupyterlab/releases/tag/v4.0.5

I'll see how to fix it.

[brichet]

@brichet Some UI tests failed, but I don't think that's my fault. Can you help?

#1812 should fix it.
Can you try rebasing ?

@lahwaacz

[lahwaacz]

@brichet Sure, rebased.

[brichet]

Thanks @lahwaacz