Merge pull request tahoe-lafs#69 from tahoe-lafs/68.trigger-on-releas…

…e-tag

Trigger on the release tag pattern that we actually use

The other one was wrong because it was expressed as a regex not as a GitHub Actions Workflows Tag Matching Filter Pattern.

.github/workflows/build.yml

@@ -10,8 +10,10 @@ on:
       - "master"
 
     tags:
-      # Do build on pushes to any release tag
-      - "zfec-.*"
+      # Do build on pushes to any release tag See
+      # https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#filter-pattern-cheat-sheet
+      # for documentation about how patterns are matched.
+      - "zfec-*"
 
   # Do build on pushes to any branch with an open pull request.
   pull_request: