Apply suggestions from code review

Co-authored-by: Mark Rousskov <[email protected]>

Author: pietroalbini

posts/2022-01-20-Rust-1.58.1.md

@@ -29,7 +29,7 @@ and you can read more about it [on the advisory we published earlier
 today][advisory]. We recommend all users to update their toolchain immediately
 and rebuild their programs with the updated compiler.
 
-Rust 1.58.1 also addresse several regressions introduced in Rust 1.58.0:
+Rust 1.58.1 also addresses several regressions in diagnostics and tooling introduced in Rust 1.58.0:
 
 * The `non_send_fields_in_send_ty` Clippy lint was discovered to have too many
   false positives and has been moved to the experimental lints group (called
@@ -38,7 +38,7 @@ Rust 1.58.1 also addresse several regressions introduced in Rust 1.58.0:
   identifiers in format strings, introduced in Rust 1.58.0.
 * A regression in Rustfmt preventing generated files from being formatted when
   passed through the standard input has been fixed.
-* An incorrect error message displayed by Rustc in some cases have been fixed.
+* An incorrect error message displayed by `rustc` in some cases have been fixed.
 
 You can find more detailed information on the specific regressions in the
 [release notes].