Configurator fix for Christmas Tree (#3338)

keyboards/christmas_tree/info.json

@@ -6,7 +6,7 @@
   "width": 3,
   "height": 3,
   "layouts": {
-    "2017": {
+    "LAYOUT": {
       "key_count": 6,
       "layout": [{"x":1, "y":0}, {"x":0.5, "y":1}, {"x":1.5, "y":1}, {"x":0, "y":2}, {"x":1, "y":2}, {"x":2, "y":2}]
     }