Update ci.yml

Author: cristianoc

.github/workflows/ci.yml

@@ -74,7 +74,7 @@ jobs:
 
  - name: Run tests (Windows)
  if: runner.os == 'Windows'
- run: opam exec -- node scripts/ciTest.js -mocha -theme
+ run: opam exec -- node scripts/ciTest.js -mocha -theme -format
 
  - name: Get artifact info
  id: get_artifact_info