Update example output comments

Add `Output` comments to the example files to reflect the actual output
of the programs. This helps with verifying correctness and understanding
example behavior.

src/main.rs

@@ -4,7 +4,7 @@ use std::path::PathBuf;
 
 fn main() -> eframe::Result {
     let options = eframe::NativeOptions {
-        viewport: egui::ViewportBuilder::default().with_inner_size([800.0, 600.0]),
+        viewport: egui::ViewportBuilder::default().with_inner_size([1024.0, 768.0]),
         ..Default::default()
     };
     eframe::run_native(