Fix the index values in the comments (#21276)

Fix the index values in the comments.

Author: baozaolaoba-top

examples/2d/bloom_2d.rs

@@ -26,31 +26,31 @@ fn setup(
             clear_color: ClearColorConfig::Custom(Color::BLACK),
             ..default()
         },
-        Tonemapping::TonyMcMapface, // 2. Using a tonemapper that desaturates to white is recommended
-        Bloom::default(),           // 3. Enable bloom for the camera
+        Tonemapping::TonyMcMapface, // 1. Using a tonemapper that desaturates to white is recommended
+        Bloom::default(),           // 2. Enable bloom for the camera
         DebandDither::Enabled,      // Optional: bloom causes gradients which cause banding
     ));
 
     // Sprite
     commands.spawn(Sprite {
         image: asset_server.load("branding/bevy_bird_dark.png"),
-        color: Color::srgb(5.0, 5.0, 5.0), // 4. Put something bright in a dark environment to see the effect
+        color: Color::srgb(5.0, 5.0, 5.0), // 3. Put something bright in a dark environment to see the effect
         custom_size: Some(Vec2::splat(160.0)),
         ..default()
     });
 
     // Circle mesh
     commands.spawn((
         Mesh2d(meshes.add(Circle::new(100.))),
-        // 4. Put something bright in a dark environment to see the effect
+        // 3. Put something bright in a dark environment to see the effect
         MeshMaterial2d(materials.add(Color::srgb(7.5, 0.0, 7.5))),
         Transform::from_translation(Vec3::new(-200., 0., 0.)),
     ));
 
     // Hexagon mesh
     commands.spawn((
         Mesh2d(meshes.add(RegularPolygon::new(100., 6))),
-        // 4. Put something bright in a dark environment to see the effect
+        // 3. Put something bright in a dark environment to see the effect
         MeshMaterial2d(materials.add(Color::srgb(6.25, 9.4, 9.1))),
         Transform::from_translation(Vec3::new(200., 0., 0.)),
     ));