Swap Design System list for gem list on /help

[hannalaakso]

⚠️ This repo is Continuously Deployed: make sure you follow the guidance ⚠️

What

Replace the GOV.UK Design System list component on /help with the gem list component.

I would have liked to iterate through the list items to remove the repetition of tag and class names but we're currently storing the help link data as named values here and there might be a reason for making the values explicit to people editing the file. However, we've created a new card to look at the inconsistencies between the various gem and app level components that are used to render lists like this. Following on from that card we might be able to simplify how this specific list is rendered.

I've checked that the outputted HTML of the list is the same before and after including the href.

Why

We're moving to gem-level components in our frontend apps where possible to reduce frontend complexity.

Trello card

Screenshots?

Before

After

[MartinJJones]

Nice work, the changes look good to me, I've made a couple of small non-blocking comments that you may wish to look at further