Fix wording

Co-authored-by: Daniel Egger <[email protected]>

Author: eldruin

src/lib.rs

@@ -57,7 +57,7 @@
 //! }
 //! ```
 //!
-//! You can use `Infallible` to signal that some API has no fatal
+//! You can use `Infallible` type to signal that some API has no fatal
 //! errors but may block:
 //!
 //! ```