Replace ⭳ and ⭱ characters with ⬇ and ⬆ (#1635)

substrate/core/cli/src/informant.rs

@@ -68,7 +68,7 @@ pub fn start<C>(service: &Service<C>, exit: ::exit_future::Exit, handle: TaskExe
 			let bandwidth_upload = network.average_upload_per_sec();
 			info!(
 				target: "substrate",
-				"{}{} ({} peers), best: #{} ({}), finalized #{} ({}), ⭳ {} ⭱ {}",
+				"{}{} ({} peers), best: #{} ({}), finalized #{} ({}), ⬇ {} ⬆ {}",
 				Colour::White.bold().paint(&status),
 				target,
 				Colour::White.bold().paint(format!("{}", sync_status.num_peers)),