Update rustc-dev-guide

- .gitattributes: Mark minified javascript as binary to filter greps
- fix very minor punctuation typo
- diagnostic structs: derive on enum (rust-lang#1477)
- Update running tests with the new flags (rust-lang#1476)
- Rename typeck to hir_analysis (rust-lang#1475)
- fix typo and make paragraph consistent (rust-lang#1474)
- Update about-this-guide.md
- Link to the correct page in "about this guide"
- Update r-a config suggestions
- don't refer to the compile-time interpreter as "Miri" (rust-lang#1471)
- UPDATE - Diagnostic docs to reflect renamed traits and macros in rustc PR#101558
- Update mdbook and its extensions versions
- Remove unmaintained action
- Update some actions versions
- Fix some typos

Update motivated in large part by the most recent commit, to fix `git
grep`.

Author: joshtriplett