For 9.4, we hope to automate it in #30306; but for Sage 9.3, perhaps we can at least explain to the user what needs to be done.

Further escalation in #30313: Doc: Add instructions how to run a remote SageMath jupyter kernel

CC: @nbruin @slel @jcamp0x2a @dimpase @paulmasson @embray

Component: documentation

Author: Matthias Koeppe

Branch/Commit: 726a0f9

Reviewer: François Bissey

Issue created by migration from https://trac.sagemath.org/ticket/30476