Update creality_ender4.def.json

Overall printer dimensions were entered instead of build volume.

resources/definitions/creality_ender4.def.json

@@ -4,9 +4,9 @@
     "inherits": "creality_base",
     "overrides": {
         "machine_name": { "default_value": "Creality Ender-4" },
-        "machine_width": { "default_value": 452 },
-        "machine_depth": { "default_value": 468 },
-        "machine_height": { "default_value": 482 },
+        "machine_width": { "default_value": 220 },
+        "machine_depth": { "default_value": 220 },
+        "machine_height": { "default_value": 300 },
         "machine_head_with_fans_polygon": { "default_value": [
                 [-26, 34],
                 [-26, -32],
@@ -24,4 +24,4 @@
         "quality_definition": "creality_base",
         "visible": true
     }
-}
+}