message: fix compilation of doc test
diff: @@ -60,10 +60,11 @@ impl From<u8> for Type {
  /// a function which takes a [`[u8]`] by using an ampersand (`&`):
  ///
  /// ```
  +/// use cbor_event::{Bytes};
  /// fn take_slice(slice: &[u8]) { /* ... */ }
  ///
  -/// let original_source = vec![0,1,2];
  -/// let bytes = Bytes::from(&original_source);
  +/// let original_source : &'static [u8] = &[0u8,1u8,2u8];
  +/// let bytes = Bytes::from(original_source);
  /// take_slice(&bytes);
  /// ```
  ///
  