Correct the command used to run test for idl

Author: minggangw

.github/workflows/linux-x64-build-and-test.yml

@@ -79,7 +79,7 @@ jobs:
       run: |
         source /opt/ros/${{ matrix.ros_distribution }}/setup.bash
         npm i
-        npm test-idl
+        npm run test-idl
         npm run clean
 
     - name: Coveralls Parallel