Fix link

Author: eldruin

embedded-hal-async/README.md

@@ -14,7 +14,7 @@ The purpose of this crate is to iterate over these trait versions before integra
 
 **NOTE** These traits are still experimental. At least one breaking change to this crate is expected in the future (changing from GATs to `async fn`), but there might be more.
 
-This project is developed and maintained by the [HAL team][https://github.com/rust-embedded/wg#the-hal-team].
+This project is developed and maintained by the [HAL team](https://github.com/rust-embedded/wg#the-hal-team).
 
 ## [API reference]