A couple of chapter 7 fixes.

book/src/chapter_7.md

@@ -637,7 +637,7 @@ pub fn delete_the_dead(ecs : &mut World) {
                 let player = players.get(entity);
                 match player {
                     None => dead.push(entity),
-                    Some(_) => println!("You are dead")
+                    Some(_) => console::log("You are dead")
                 }
             }
         }

chapter-07-damage/src/damage_system.rs

@@ -32,7 +32,7 @@ pub fn delete_the_dead(ecs : &mut World) {
                 let player = players.get(entity);
                 match player {
                     None => dead.push(entity),
-                    Some(_) => console::log(&format!("You are dead"))
+                    Some(_) => console::log("You are dead")
                 }
             }
         }