Try qualified team name

Author: ralfhandl

.github/workflows/respec.yaml

@@ -58,7 +58,7 @@ jobs:
           delete-branch: true
           path: deploy
           labels: OpenAPI,Specification
-          team-reviewers: tsc
+          team-reviewers: OAI/tsc
           title: OpenAPI - Update ReSpec-rendered specification versions
           commit-message: Update ReSpec-rendered specification versions
           signoff: true