Help link in user menu redirects to an error page

[gtsiolis]

Bug description

Following up from #10061, the moved help link inside the user menu redirects to an error page. Cc @laushinka

Steps to reproduce

1. Open any dashboard page
2. Click the user avatar to open the user menu
3. Click the help link

Screenshots

Workspace affected

No response

Expected behavior

No response

Example repository

No response

Anything else?

No response

[laushinka]

Thanks for catching it, @gtsiolis! Fixing it now.