Apply suggestions from PR review

Author: ebroto

CHANGELOG.md

@@ -46,7 +46,7 @@ Current beta, release 2020-07-16
 
 ### Enhancements
 
-* Avoid running cargo/internal lints when not enabled. [#5505](https://github.com/rust-lang/rust-clippy/pull/5505)
+* Avoid running cargo lints when not enabled to improve performance. [#5505](https://github.com/rust-lang/rust-clippy/pull/5505)
 * Extend [`useless_conversion`] with `TryFrom` and `TryInto`. [#5631](https://github.com/rust-lang/rust-clippy/pull/5631)
 * Lint also in type parameters and where clauses in [`unused_unit`]. [#5592](https://github.com/rust-lang/rust-clippy/pull/5592)
 * Do not suggest deriving `Default` in [`new_without_default`]. [#5616](https://github.com/rust-lang/rust-clippy/pull/5616)
@@ -61,7 +61,7 @@ Current beta, release 2020-07-16
 * Don't trigger [`borrowed_box`] on mutable references. [#5491](https://github.com/rust-lang/rust-clippy/pull/5491)
 * Allow `1 << 0` in [`identity_op`]. [#5602](https://github.com/rust-lang/rust-clippy/pull/5602)
 * Allow `use super::*;` glob imports in [`wildcard_imports`]. [#5564](https://github.com/rust-lang/rust-clippy/pull/5564)
-* Add ignores to the list of words of [`doc_markdown`]. [#5611](https://github.com/rust-lang/rust-clippy/pull/5611)
+* Whitelist more words in [`doc_markdown`]. [#5611](https://github.com/rust-lang/rust-clippy/pull/5611)
 * Skip dev and build deps in [`multiple_crate_versions`]. [#5636](https://github.com/rust-lang/rust-clippy/pull/5636)
 * Honor `allow` attribute on arguments in [`ptr_arg`]. [#5647](https://github.com/rust-lang/rust-clippy/pull/5647)
 * Honor lint level attributes for [`redundant_field_names`], [`just_underscores_and_digits`], [`many_single_char_names`]
@@ -78,7 +78,7 @@ and [`similar_names`]. [#5651](https://github.com/rust-lang/rust-clippy/pull/565
 ### ICE Fixes
 
 * Fix ICE caused in unwrap module. [#5590](https://github.com/rust-lang/rust-clippy/pull/5590)
-* Fix crash on rustc test issue-69020-assoc-const-arith-overflow.rs [#5499](https://github.com/rust-lang/rust-clippy/pull/5499)
+* Fix ICE on rustc test issue-69020-assoc-const-arith-overflow.rs [#5499](https://github.com/rust-lang/rust-clippy/pull/5499)
 
 ### Documentation
 

doc/changelog_update.md

@@ -32,9 +32,10 @@ bullet points might be helpful:
   need to select the Rust release tag from the dropdown and then check the
   commit of the Clippy directory:
 
-To find the commit hash, click on "History" of the relevant branch in github
-and search for the latest "Merge commit '<hash>' into <branch>" commit.
-The <hash> part is then the most recent commit in the clippy repo.
+To find the commit hash, issue the following command when in a `rust-lang/rust` checkout:
+```
+git log --oneline -- src/tools/clippy/ | grep -o "Merge commit '[a-f0-9]*' into .*" | head -1 | sed -e "s/Merge commit '\([a-f0-9]*\)' into .*/\1/g"
+```
 
 ### 2. Fetching the PRs between those commits