Fix documentation and remove friend keyword

Remove friend keyword and put variables in public instead
Fix documentation where the name of the component is not specified

Co-Authored-By: Benjamin HENRY <44569175+EternalRat@users.noreply.github.com>

sources/System/Health/HealthSystem.cpp

@@ -19,7 +19,7 @@ namespace BBM
 	{
 		auto &health = entity.getComponent<HealthComponent>();
 
-		if (health._healthPoint == 0);
-			health.die();
+		if (health.getHealthPoint() == 0);
+			entity.setDisable(true);
 	}
 }