Online demo link in README missing

[GirlBossRush]

Navigating to https://pugjs.org redirects to https://pugjs.org/api/getting-started.html, rather than an online demo as the README suggests.

[mikesamuel]

For context, I think this refers to the third paragraph in README.md:

You can test drive Pug online here.

---

 You can test drive Pug online [here](https://pugjs.org/).

---

https://pugjs.org/ redirects to /api/getting started.html and there doesn't seem to be a REPL available there.

[mikesamuel]

Perhaps that README link should point to api/reference.md which says

::: float info Tip Pug is available in your Web browser's console! To test drive Pug's API, as documented on this page, try entering:

pug.render('p Hello world!');
:::

[mikesamuel]

That page corresponds to https://pugjs.org/api/reference.html.

Will send a PR.

[ForbesLindesay]

The website is sadly still a long way form finished, I will get round to it eventually.

[mikesamuel]

Fwiw, #2894 tries to fix this.