Summary
Currently there is no user-facing documentation about the email auth verification code. In this task, let's create a public facing help page (mw:Help:Extension:EmailAuth) and link to it from the verification code input page.
Background
Users may need additional context to understand the verification code workflow, or know how to find help if the code does not work, or if they no longer have access to their email.
User story
As a user logging in, I want a link to a help page if I get stuck at the verification code step.
Technical notes
Update the auth form change hook to include a link to mw:Help:Extension:EmailAuth
Acceptance criteria
- mw:Help:Extension:EmailAuth exists and has instructions to help with 1) token not working or 2) no longer have access to my email address
- Token input form links to mw:Help:Extension:EmailAuth