Rollup merge of rust-lang#157265 - rustbot:docs-update, r=ehuss

Update books

## rust-lang/reference

10 commits in ad35aca481751a06afeb23820a672b0f3b11a476..01b0ee707f4571e803c8b2c471d8335a448f5d60
2026-05-31 18:52:24 UTC to 2026-05-20 14:06:08 UTC

- Update `naked` to use the attribute template (rust-lang/reference#1908)
- Update link_name for updated restrictions (rust-lang/reference#2268)
- parens are not optional in guard chains that have || operators (rust-lang/reference#2224)
- Document `target_has_atomic_primitive_alignment` (rust-lang/reference#2273)
- Fix grammar rules pertaining to obsolete range patterns (rust-lang/reference#2259)
- Unwrap a few remaining chapters (rust-lang/reference#2276)
- Guarantee alignment of `repr(C)` structs with no fields (rust-lang/reference#2264)
- avoid using 'place projection' for only some of the projections (rust-lang/reference#2253)
- add xtask doctest (rust-lang/reference#2255)
- Grammar: Don't allow inner attrs in certain block expressions (rust-lang/reference#2269)

## rust-lang/rust-by-example

7 commits in 898f0ac1479223d332309e0fce88d44b39927d28..d3117f6c873acbbf331c1d510371d061dfcc975c
2026-06-01 14:19:19 UTC to 2026-05-25 13:19:23 UTC

- Fix Spanish translation typos in es.po (rust-lang/rust-by-example#2018)
- Match comment module & file order (rust-lang/rust-by-example#2009)
- Fix Spanish translation typos in es.po (rust-lang/rust-by-example#2011)
- Update expression.md: renamed variable x_cube to x_cubed (rust-lang/rust-by-example#2012)
- Update comment.md - Fixed comments related to asterisk column (rust-lang/rust-by-example#2013)
- Minor typo in meta.md (rust-lang/rust-by-example#2016)
- Fix erroroneous implication (rust-lang/rust-by-example#2017)

Author: jhpratt