bare10 even more polish

examples/bare10.rs

@@ -139,7 +139,7 @@ const APP: () = {
 // 0. Compile and run the project at 16MHz in release mode
 //    make sure its running (not paused).
 //
-//    > cargo build --example bare9 --features "rtfm" --release
+//    > cargo build --example bare10 --features "rtfm" --release
 //    (or use the vscode build task)
 //
 //    Connect a terminal program.