fix test coverage example exclusion

Author: siherrmann

.github/workflows/coverage.yml

@@ -19,7 +19,7 @@ jobs:
       - name: Build
         run: go build -v ./...
       - name: Test
-        run: go test -v -coverprofile coverage.out $(go list ./... | grep -v /example/)
+        run: go test -v -coverprofile coverage.out $(go list ./... | grep -v queuer/example)
       - name: Update coverage report
         uses: ncruces/go-coverage-report@v0
         with: