Rollup merge of #73143 - ehuss:update-books, r=ehuss

Update books

## nomicon

3 commits in d1517d4e3f29264c5c67bce2658516bb5202c800..bfe1ab96d717d1dda50e499b360f2e2f57e1750a
2020-05-12 13:47:00 -0400 to 2020-06-05 13:19:42 -0400
- Clarify that str data must still be initialized
- Remove language-level UB for non-UTF-8 str
- fix Nomicon transmute UB

## reference

5 commits in becdca9477c9eafa96a4eea5156fe7a2730d9dd2..5d40ba5c2515caffa7790cda621239dc21ef5a72
2020-05-21 21:08:02 +0100 to 2020-06-06 20:25:36 -0700
- Add some links to Disambiguating Function Calls. (rust-lang-nursery/reference#829)
- change bash to sh as shell code blocks language indentifier (rust-lang-nursery/reference#827)
- Fix sentence mistake in array-expr.md (rust-lang-nursery/reference#826)
- removed the word "Second" form the beginning of the 2nd list item and  labelled it as `2` (rust-lang-nursery/reference#822)
- Update fn-like proc-macro invocation restrictions. (rust-lang-nursery/reference#816)

## book

14 commits in e8a4714a9d8a6136a59b8e63544e149683876e36..30cd9dfe71c446de63826bb4472627af45acc9db
2020-05-25 10:29:27 -0500 to 2020-06-07 23:07:19 -0500
- Unnecessarily long type name in Ch 13 (rust-lang/book#2362)
- Tweak example in chapter 10 (rust-lang/book#2363)
- Mention that to_lowercase isn't perfect (rust-lang/book#2364)
- fix typo in CONTRIBUTING.md (rust-lang/book#2360)
- Link German translation in appendix F (rust-lang/book#2347)
- Updates wording on Box example (rust-lang/book#2332)
- fix: match 15-24 with 15-18 (rust-lang/book#2324)
- Reword ch01-03 recap paragraph (rust-lang/book#2305)
- Remove some confusing wording. (rust-lang/book#2358)
- Clarify some wording a bit (rust-lang/book#2357)
- Update ch12-05 PowerShell note (rust-lang/book#2348)
- text -> console (rust-lang/book#2352)
- Improve wording around drop (rust-lang/book#2350)
- Make some statements about crates more correct (rust-lang/book#2349)

## edition-guide

1 commits in 0a8ab5046829733eb03df0738c4fafaa9b36b348..82bec5877c77cfad530ca11095db4456d757f668
2020-05-18 08:34:23 -0500 to 2020-06-03 08:56:02 -0500
- Add stuff for Rust 1.33 (rust-lang/edition-guide#214)

book @ 30cd9dfe

-Subproject commit e8a4714a9d8a6136a59b8e63544e149683876e36
+Subproject commit 30cd9dfe71c446de63826bb4472627af45acc9db

edition-guide @ 82bec587

-Subproject commit 0a8ab5046829733eb03df0738c4fafaa9b36b348
+Subproject commit 82bec5877c77cfad530ca11095db4456d757f668

nomicon @ bfe1ab96

-Subproject commit d1517d4e3f29264c5c67bce2658516bb5202c800
+Subproject commit bfe1ab96d717d1dda50e499b360f2e2f57e1750a

reference @ 5d40ba5c

-Subproject commit becdca9477c9eafa96a4eea5156fe7a2730d9dd2
+Subproject commit 5d40ba5c2515caffa7790cda621239dc21ef5a72