Fix(Fortune): Correctly set the trigger date for Thanksgiving

fortune_generator/json/special.json

@@ -4,7 +4,8 @@
       "event": "感恩節",
       "triggerDate": {
         "month": "11",
-        "date": "23"
+        "week": "4",
+        "weekday": "4"
       },
       "status_index": "0",
       "goodFortunes": {
@@ -762,26 +763,6 @@
         "r_2_event": "",
         "r_2_desc": ""
       }
-    },
-    {
-      "event": "感恩節",
-      "triggerDate": {
-        "month": "11",
-        "date": "28"
-      },
-      "status_index": "0",
-      "goodFortunes": {
-        "l_1_event": "家人團聚",
-        "l_1_desc": "共享寶貴時光",
-        "l_2_event": "",
-        "l_2_desc": ""
-      },
-      "badFortunes": {
-        "r_1_event": "",
-        "r_1_desc": "",
-        "r_2_event": "",
-        "r_2_desc": ""
-      }
     }
   ]
 }