Auto merge of #110688 - GuillaumeGomez:result-search-type, r=notriddle,jsha

rustdoc: Add search result item types after their name

Here what it looks like:

![Screenshot from 2023-04-22 15-16-58](https://user-images.githubusercontent.com/3050060/233789566-b5f3f625-3b78-4c56-a7ee-0a4f2d62e667.png)

The idea is to improve accessibility by providing this information directly in the text and not only in the text color. Currently we already use it for doc aliases and for primitive types, so I extended it to all types.

r? `@notriddle`

Author: bors