Update create-player-hazards.md (#1097)

Fixed a typo in the Code Explanation of the CoinService script. But I'm
not sure if the link will be updated automatically.

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Author: ych8

content/en-us/tutorials/curriculums/core/scripting/create-player-hazards.md

@@ -141,10 +141,10 @@ Players.PlayerRemoving:Connect(onPlayerRemoved)
 The code defines functions to reset coin counts during the appropriate
 lifecycle events:
 
-- `Class.Player.PlayerAdded` fires when a player joins the experience, and sets
+- `Class.Players.PlayerAdded` fires when a player joins the experience, and sets
   the coin count to `0`.
 - `Class.Player.CharacterAdded` fires when a player's character model is added
-  to the world. It occurs after `Class.Player.PlayerAdded|PlayerAdded` and
+  to the world. It occurs after `Class.Players.PlayerAdded|PlayerAdded` and
   whenever the player respawns.
 - `Class.Humanoid.Died` fires when a player dies, and sets
   the coin count to `0`. `Library.task.spawn()` creates