correcting path to /isolate/<isolate id>/debug/resume

@johnmccutchan is `/isolate/<isolate id>/resume` a valid path? 

If so what determines to use `/isolate/<isolate id>/debug/resume` or  `/isolate/<isolate id>/resume`? 

If there a way to tell which resume should be called?

I'm executing unit test scripts with `dart --enable-vm-service --pause-isolates-on-exit test/all.dart ` and want to resume to exit the unit test runner.