HTML5 needs no space

[blaesus]

In the section concerning abbreviations, this sentence is used as a example:

我們需要一位熟悉 JavaScript、HTML 5，至少理解一种框架（如 Backbone.js、AngularJS、React 等）的前端開發者。

A WHATWG blog states that “HTML5” should not contain spaces :

What’s the right way to spell “HTML5”? The short answer is: “HTML5” (without a space).

One can also see this on the W3C HTML5 homepage.

[sparanoid]

Good catch @andyshuxin