Rollup merge of #73707 - LeSeulArtichaut:patch-3, r=kennytm
Rollup merge of #73707 - LeSeulArtichaut:patch-3, r=kennytm

Fix links in `SliceIndex` documentation

See [this doc](https://doc.rust-lang.org/nightly/std/slice/trait.SliceIndex.html#tymethod.get_unchecked) whose links aren't active because of this missing newline.

aidancully/rust,aidancully/rust,graydon/rust,graydon/rust,graydon/rust,aidancully/rust,aidancully/rust,graydon/rust,aidancully/rust,aidancully/rust,graydon/rust,graydon/rust