Update README.md

Author: swhitty

README.md

@@ -42,7 +42,7 @@ let val = state.withLock { $0 += 1 }
 
 # Gist
 
-A simpler version compatible with macOS 13 / iOS 16 can be found in [this gist](https://gist.github.com/swhitty/571deb25d84c1954a7a01aafa661496e).
+A simpler, single file version compatible with macOS 13 / iOS 16 can be found in [this gist](https://gist.github.com/swhitty/571deb25d84c1954a7a01aafa661496e).
 
 
 # Credits