Fix 1.21.2 recipe format change

Author: MarbleGateKeeper

common/src/main/resources/data/splash_milk/recipe/milk_bottle.json

@@ -1,18 +1,10 @@
 {
   "type": "minecraft:crafting_shapeless",
   "ingredients": [
-    {
-      "item": "minecraft:glass_bottle"
-    },
-    {
-      "item": "minecraft:glass_bottle"
-    },
-    {
-      "item": "minecraft:glass_bottle"
-    },
-    {
-      "item": "minecraft:milk_bucket"
-    }
+    "minecraft:glass_bottle",
+    "minecraft:glass_bottle",
+    "minecraft:glass_bottle",
+    "minecraft:milk_bucket"
   ],
   "result": {
     "id": "splash_milk:milk_bottle",