Merge pull request marda-alliance#16 from marda-alliance/wd15-patch-1

Update README.md

Author: wd15

README.md

@@ -31,7 +31,8 @@ If you would like to join this working group then please contact one of the grou
 3. [September WG meet](./meeting-minutes/meet-002_2023-09-21.md), 2023-09-21
 4. [October WG meet](./meeting-minutes/meet-003_2023-10-20.md), 2023-10-20
 5. [November WG meet](./meeting-minutes/meet-004_2023-11-17.md), 2023-11-17
- 
+6. [December WG meet](./meeting-minutes/meet-005_2023-12-15.md), 2023-12-15
+
 ## Proposal
 
 See [proposal document](./proposal.md)