Update posts/2025-01-09-Rust-1.84.0.md

Co-authored-by: Josh Triplett <josh@joshtriplett.org>

Author: Mark-Simulacrum

posts/2025-01-09-Rust-1.84.0.md

@@ -25,7 +25,7 @@ If you'd like to help us out by testing future releases, you might consider upda
 which uses the declared [minimum supported Rust version](https://doc.rust-lang.org/cargo/reference/rust-version.html) from
 dependencies, if available, to improve package version selection. Rust version
 aware selection allows library authors to easily adopt newer Rust versions
-while providing library consumers a way to opt-in to using new package versions
+while allowing consumers of the library to automatically use old versions
 if they need compatibility with older toolchains.
 
 Library authors should start declaring their MSRV. Previously, bumping the