Styling improvements and better organization of the healtcheck message

[KevinMind]

Fixes: mozilla/addons#15505

Description

Improved formatting and add missing environment

Testing

before:

after:

Checklist

• [X] Add #ISSUENUM at the top of your PR to an existing open issue in the mozilla/addons repository.
• [X] Successfully verified the change locally.
• [X] The change is covered by automated tests, or otherwise indicated why doing so is unnecessary/impossible.
• [X] Add before and after screenshots (Only for changes that impact the UI).
• [ ] Add or update relevant docs reflecting the changes made.

[diox]

Could you linkify the build and even commit here ?

[KevinMind]

Could you linkify the build and even commit here ?

That screenshot is outdated. I could linkify everything but It would be a lot of work and you can get all of the links from clicking on the existing links