docs: Tweak example testing workflow.
docs: Tweak example testing workflow.

The node test was slightly inaccurate.

I added `# etc.` to try to make it clear that
these are just examples.

I removed the puppeteer example, so that we
don't lie about "run in just a few seconds".

andersk/zulip,kou/zulip,rht/zulip,andersk/zulip,rht/zulip,kou/zulip,rht/zulip,zulip/zulip,zulip/zulip,kou/zulip,zulip/zulip,kou/zulip,kou/zulip,rht/zulip,andersk/zulip,kou/zulip,rht/zulip,andersk/zulip,andersk/zulip,rht/zulip,zulip/zulip,andersk/zulip,rht/zulip,andersk/zulip,zulip/zulip,zulip/zulip,zulip/zulip,kou/zulip