Fix readme

rust-lang#14577 (comment)

Author: jsoref

.github/actions/github-release/README.md

@@ -10,7 +10,7 @@ perform github releases but they all tend to have their set of drawbacks.
 Additionally nothing handles deleting releases which we need for our rolling
 `dev` release.
 
-To handle all this action rolls-its-own implementation using the
+To handle all this, this action rolls its own implementation using the
 actions/toolkit repository and packages published there. These run in a Docker
 container and take various inputs to orchestrate the release from the build.