Rollup merge of #102369 - GuillaumeGomez:results-colors, r=notriddle

Fix search result colors

Fixes regression introduced in https://github.com/rust-lang/rust/commit/99c00714cff0d13b6c5092c9949cb4e93a121346.

As you can see, ayu lost some colors for its search results:

beta/nightly:
![Screenshot from 2022-09-27 19-46-49](https://user-images.githubusercontent.com/3050060/192606456-e7bb58dd-cf76-49a0-b1ae-28565adb1dc6.png)

stable:
![Screenshot from 2022-09-27 19-46-36](https://user-images.githubusercontent.com/3050060/192606453-e720e219-a336-4ff1-989b-2fdb76e789eb.png)

We'll need to backport it to beta too to prevent it reaching stable.

r? `@notriddle`

diff --cc src/librustdoc/html/static/css/rustdoc.css
Simple merge