Fixed faulty doc test in blocking.rs

CHANGELOG.md

@@ -7,6 +7,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 ## [Unreleased]
 
+- Fix faulty doc test in `blocking.rs`
 - Update the non-blocking display documentation to better explain when methods
  should be called from within a critical section
 - Bump example dependencies to latest versions to fix build

microbit-common/src/display/blocking.rs

@@ -39,6 +39,15 @@
 //! connector. That means that
 //!
 //! ```no_run
+//! # use microbit_common as microbit;
+//! # use microbit::{
+//! # Board,
+//! # hal,
+//! # display::blocking::Display,
+//! # };
+//! # let board = Board::take().unwrap();
+//! # let mut timer = hal::Timer::new(board.TIMER0);
+//! # let mut display = Display::new(board.display_pins);
 //! display.show(
 //! &mut timer,
 //! [