fixed incorrect naming convention

Assets/BossRoom/Prefabs/Player.prefab

   m_Script: {fileID: 11500000, guid: 2d0d8ed0724e1404d9d0afcd9b8b5ee2, type: 3}
   m_Name: 
   m_EditorClassIdentifier: 
-  FeedbackPrefab: {fileID: 9137928905311479176, guid: 86bfc5d7bdc268842947478bcdd38c08, type: 3}
+  m_FeedbackPrefab: {fileID: 9137928905311479176, guid: 86bfc5d7bdc268842947478bcdd38c08, type: 3}
 --- !u!1001 &7872000410579295758
 PrefabInstance:
   m_ObjectHideFlags: 0

Assets/BossRoom/Scripts/Client/ClickFeedback.cs

   public class ClickFeedback : MonoBehaviour
   {
     [SerializeField]
-    GameObject FeedbackPrefab;
+    GameObject m_FeedbackPrefab;
     GameObject m_FeedbackObj;
     ClientInputSender m_ClientSender;
 
     {
       m_ClientSender = GetComponent<ClientInputSender>();
       m_ClientSender.OnClientClick += onClick;
-      m_FeedbackObj = Instantiate(FeedbackPrefab);
+      m_FeedbackObj = Instantiate(m_FeedbackPrefab);
       m_FeedbackObj.SetActive(false);
     }