update an outdated comment

Author: joseph-gio

crates/bevy_ecs/examples/resources.rs

@@ -15,15 +15,15 @@ fn main() {
     let mut schedule = Schedule::default();
     let mut update = SystemStage::parallel();
 
-    // Declare a private stage label
-
     // Add systems to increase the counter and to print out the current value
     update.add_system(increase_counter);
     update.add_system(print_counter.after(increase_counter));
 
-    // Add the stage to the schedule.
+    // Declare a unique label for the stage.
     #[derive(StageLabel)]
     struct Update;
+
+    // Add the stage to the schedule.
     schedule.add_stage(Update, update);
 
     for iteration in 1..=10 {