Update posts/2020-10-05-Rust-1.47.md

Co-authored-by: Jonas Schievink <[email protected]>

Author: steveklabnik

posts/2020-10-05-Rust-1.47.md

@@ -25,7 +25,7 @@ appropriate page on our website, and check out the [detailed release notes for
 
 ## What's in 1.47.0 stable
 
-This release contains no new significant features, and is mostly qualitify of
+This release contains no new significant features, and is mostly quality of
 life improvements, library stabilizations and const-ifications, and toolchain
 improvements. See the [detailed release notes][notes] to learn about other
 changes not covered by this post.