Update posts/2019-05-23-Rust-1.35.0.md

Author: Centril

posts/2019-05-23-Rust-1.35.0.md

@@ -43,7 +43,7 @@ This was because instances of `Box<dyn FnOnce>` and friends did not implement th
 This also meant that it was not possible to pass boxed functions to code expecting an implementor of a `Fn` trait,
 and you had to create temporary closures to pass them down.
 
-This was ultimately due to a limitation in the compiler's ability to reason about such impls,
+This was ultimately due to a limitation in the compiler's ability to reason about such implementations,
 which has since been fixed with the introduction of [unsized locals].
 
 With this release, you can now use boxed functions in places that expect items implementing a function trait.