Rollup merge of #143248 - rustbot:docs-update, r=ehuss

Update books

## rust-lang/book

2 commits in 8a6d44e45b7b564eeb6bae30507e1fbac439d72d..ef1ce8f87a8b18feb1b6a9cf9a4939a79bde6795
2025-06-28 18:06:08 UTC to 2025-06-26 23:08:19 UTC

- Chapter 14 from tech review (rust-lang/book#4423)
- Chapter 13 from tech review (rust-lang/book#4421)

## rust-embedded/book

1 commits in 10fa1e084365f23f24ad0000df541923385b73b6..41f688a598a5022b749e23d37f3c524f6a0b28e1
2025-06-27 07:21:31 UTC to 2025-06-27 07:21:31 UTC

- Fix incorrect type for semihosted stdout stream rust-lang/rust#394 (rust-embedded/book#395)

## rust-lang/reference

4 commits in 50fc1628f36563958399123829c73755fa7a8421..e9fc99f107840813916f62e16b3f6d9556e1f2d8
2025-06-28 20:00:14 UTC to 2025-06-24 19:02:48 UTC

- fix: swap places for 2 words in associated-items.md sentence. (rust-lang/reference#1871)
- Add new temporary lifetime extension rule (rust-lang/reference#1813)
- Fix smart punctuation inside grammar terminals (rust-lang/reference#1869)
- Fix placement of codegen link definitions (rust-lang/reference#1868)

## rust-lang/rust-by-example

1 commits in 05c7d8bae65f23a1837430c5a19be129d414f5ec..288b4e4948add43f387cad35adc7b1c54ca6fe12
2025-06-25 12:35:59 UTC to 2025-06-25 12:35:59 UTC

- allow easy fixes (rust-lang/rust-by-example#1941)

Author: matthiaskrgr