Add open projects to the weekly TDC agenda

We've started actually reaching the end of the meeting-specific
agenda, which is great.  We have tended to look at the open
projects, but that has required someone suggesting that action.

This adds a link to the open projects after the spec PRs and
before the new issues (which looks for unlabled issues).

Author: handrews

.github/templates/agenda.md

@@ -29,7 +29,8 @@ Meetings take place over Zoom: [https://zoom.us/j/975841675](https://zoom.us/j/9
 Intros and governance meta-topics (5 mins) | TDC | |
 Reports from Special Interest Groups (5 mins) | SIG members | |
 Any other business (add comments below to suggest topics) | TDC | |
-[Approved spec PRs](https://github.com/OAI/OpenAPI-Specification/pulls?q=is%3Apr+is%3Aopen+review%3Aapproved) | TDC | |
+[Approved spec PRs](https://github.com/OAI/OpenAPI-Specification/pulls?q=is%3Apr+is%3Aopen+review%3Aapproved) | @OAI/tsc | |
+[Active Projects](https://github.com/OAI/OpenAPI-Specification/projects?query=is%3Aopen) | @OAI/openapi-maintainers | |
 [New issues needing attention](https://github.com/search?q=repo%3Aoai%2Fopenapi-specification+is%3Aissue+comments%3A0+no%3Alabel+is%3Aopen) | @OAI/triage  | |
 
 /cc [@OAI/tsc](https://github.com/orgs/OAI/teams/tsc) please suggest items for inclusion.