Fix item recipe on 1.21

- Added advancement for recipe

Signed-off-by: Naomi Roberts <[e-mail]>

src/common/main/resources/data/angle_ring/advancement/unlock_angle_ring_recipe.json

···
+{
+  "criteria": {
+    "requirement": {
+      "trigger": "minecraft:inventory_changed",
+      "conditions": {
+        "items": [
+          {
+            "items": "minecraft:nether_star"
+          }
+        ]
+      }
+    }
+  },
+  "requirements": [
+    [
+      "requirement"
+    ]
+  ],
+  "rewards": {
+    "recipes": [
+      "angle_ring:angle_ring"
+    ]
+  }
+}

src/common/main/resources/data/angle_ring/recipes/angle_ring.json src/common/main/resources/data/angle_ring/recipe/angle_ring.json

···
     }
   },
   "result": {
-    "item": "angle_ring:angle_ring"
+    "id": "angle_ring:angle_ring",
+    "count": 1
   }
 }