Fix book link

skade · skade · commit 9ae27429554f · 2019-08-16T15:19:10.000+02:00
diff --git a/src/lib.rs b/src/lib.rs
@@ -6,7 +6,7 @@
 //! is available.
 //!
 //! [`std`]: https://doc.rust-lang.org/std/index.html
-//! [here]: https://book.async.rs
+//! [book]: https://book.async.rs
 //!
 //! # Examples
 //!
