Rollup merge of rust-lang#109083 - rustbot:docs-update, r=ehuss

Update books

## rust-lang/nomicon

1 commits in 79b53665a7c61d171fb8c5ad0b73b371f9ee6ba7..1f3e4cd4fd88b5b5d45feb86a11b6d2f93e5a974
2023-03-12 21:51:29 UTC to 2023-03-12 21:51:29 UTC

- Change incorrect reference to "above" in ffi.md (rust-lang/nomicon#404)

## rust-lang/reference

4 commits in a9afb04b47a84a6753e4dc657348c324c876102c..24c87f6663aed55b05d2cc286878f28f21918825
2023-03-11 13:53:24 UTC to 2023-02-28 16:07:20 UTC

- Document movbe target feature (rust-lang/reference#1336)
- fix typo (rust-lang/reference#1339)
- fix: Typo/reference (rust-lang/reference#1338)
- Document `cmpxchg16b` target feature (rust-lang/reference#1331)

## rust-lang/rustc-dev-guide

13 commits in b06dab8..b1b6d69
2023-03-13 02:42:00 UTC to 2023-03-03 11:12:51 UTC

- Rename `config.toml.example` to `config.example.toml` (rust-lang/rustc-dev-guide#1641)
- fix typo `SubstRef` to `SubstsRef` (rust-lang/rustc-dev-guide#1642)
- tracing log along diff crates (rust-lang/rustc-dev-guide#1640)
- Fix Rust Analyzer settings location (rust-lang/rustc-dev-guide#1637)
- Reflect the changes in rust-lang#67000 (rust-lang/rustc-dev-guide#1632)
- improve capacity note (rust-lang/rustc-dev-guide#1634)
- Remove mention to lexer/parser refactoring (rust-lang/rustc-dev-guide#1629)
- Update date reference about infer context variables (rust-lang/rustc-dev-guide#1630)
- Update explnation about `Body.basic_blocks` (rust-lang/rustc-dev-guide#1631)
- Add detail to contributing guide (rust-lang/rustc-dev-guide#1628)
- Making the sentence more clear (rust-lang/rustc-dev-guide#1624)
- Fixed typing error (rust-lang/rustc-dev-guide#1623)
- update error code docs to reflect recent changes (rust-lang/rustc-dev-guide#1625)

Author: matthiaskrgr