Code examples in properties descriptions are sanitized

[yggg]

Issue type

I'm submitting a ... (check one with "x")

• bug report
• feature request

Issue description

https://i.imgur.com/g7OQqXQ.png

Expected behavior:

<ng-template><ng-template/>

Steps to reproduce:
Insert code example in a property description:

```html
  <ng-template><ng-template/>
` ``