make ikiwiki show proper headings
Our documentation pages are getting increasingly long in the ikiwiki. So I sometimes need to link to specific sections. For example, this link:
currently points at "Adding a new instance". Yet there are a few problems with that link:
- it's not human-readable: it's hard to understand what it refers to just by looking at it
- it's not stable: if another heading is added or remove before it, its number is going to change and the link will point elsewhere
I'm not "just doing this" right now because it's friday and I don't want to break the wiki before the weekend.