Is your feature request related to a problem? Please describe.
The systems are defined as array in config.yml. the description-Attribute allows for some plaintext - markdown won't be evaluated, however.
Use Case: Displaying the systems status is nice. You can privide additional benefit for the user, by referencing the Link to the documentation and/or a link to issue a ticket for this system. and maybe some lines of system description.
cstate currently allows for only one additional link and a short plaintext description

Describe the solution you'd like
it would be helpful, if the description on the "affected"-pages would allow for markdown. (and thus links)
You could seperate the "description" field in config.yml into tooltip (plaintext) and description (markdown).

Describe alternatives you've considered
I used cstate additional link in config.yml to point to an additinal page I created for each system.
this way, however, I have two pages per system:

1. the cstate-incident-page for the system (by clicking on the systems name)
2. my additional docu-and-tickettool-link-page (by clicking on the link-icon)
   That's not that neat and userfriendly as having only one page :/

Additional context
Some Mockup: (HTML oder Markdown not evaluatet, however)