Rename coverage feature

Author: sgodwin424

src/lib.rs

@@ -3,7 +3,7 @@
 //!
 //! See the type documentation for more information.
 
-#![cfg_attr(coverage_nightly, feature(no_coverage))]
+#![cfg_attr(coverage_nightly, feature(coverage_attribute))]
 #![cfg_attr(not(feature = "std"), no_std)]
 
 extern crate alloc;