Rollup merge of rust-lang#110775 - rustbot:docs-update, r=ehuss

Update books

## rust-lang/book

1 commits in c06006157b14b3d47b5c716fc392b77f3b2e21ce..8fa6b854d515506d825390fe0d817f5ef0c89350
2023-04-13 00:05:30 UTC to 2023-04-13 00:05:30 UTC

- Update copyright in LICENSE-APACHE (rust-lang/book#3611)

## rust-embedded/book

1 commits in 701d1551429da4cb609082c0ac99df569e336710..897fcf566f16bf87bf37199bdddec1801fd00532
2023-04-20 13:24:51 UTC to 2023-04-20 13:24:51 UTC

- typos (rust-embedded/book#347)

## rust-lang/rustc-dev-guide

5 commits in 6337ed1..2a5eb92
2023-04-22 11:50:11 UTC to 2023-04-16 11:30:24 UTC

- Add docs for compare-output-lines-by-subset flag (rust-lang/rustc-dev-guide#1677)
- fix typo (rust-lang/rustc-dev-guide#1674)
- Fix links in how-to-build-and-run.md (rust-lang/rustc-dev-guide#1679)
- docs: document new `suggest-tests` tool (rust-lang/rustc-dev-guide#1660)
- Fix extra slash (rust-lang/rustc-dev-guide#1673)