doc: Convert depends options list from html to markdown

Summary:
This makes it easier to read in less, which is important for install
instructions.

This is a backport of core#20681

Test Plan: proofreading. Check that all the options are still there and no new option has been added while solving the cherry-pick conflict.

Reviewers: #bitcoin_abc, Fabien

Reviewed By: #bitcoin_abc, Fabien

Subscribers: Fabien

Differential Revision: https://reviews.bitcoinabc.org/D12090