oak_abi: fix missing link in doc comment
@@ -69,6 +69,7 @@ extern "C" {
/// returned.
///
/// [`ERR_BUFFER_TOO_SMALL`]: crate::OakStatus::ERR_BUFFER_TOO_SMALL
+ /// [`ERR_CHANNEL_EMPTY`]: crate::OakStatus::ERR_CHANNEL_EMPTY
/// [`ERR_HANDLE_SPACE_TOO_SMALL`]: crate::OakStatus::ERR_HANDLE_SPACE_TOO_SMALL
/// [`OakStatus`]: crate::OakStatus
pub fn channel_read(
