[charter] describe deliverables

I'm used to seeing the list of deliverables in charters include a brief summary of each document, e.g. stolen from the doc's abstract. I particularly note the lack of that in the "Other Deliverables" section, where we don't have links to the documents.

I'm also aware that our charters are too wordy to begin with. Up to you whether to fix that for the existing deliverables, but I do think more words are needed for the "other deliverables", unless you have links available for not-yet-adopted proposed docs.

Locate the editing charters and review the Deliverables and Other Deliverables sections. Compare their entries with available document abstracts or links, then update the descriptions so each deliverable has an appropriate brief summary and unadopted documents are linked when possible. Done means the sections clearly describe their listed deliverables without unnecessary expansion.