Update addons.conf

Author: TechnicJelle

assets/addon_browser/addons.conf

@@ -1155,7 +1155,7 @@
     name: "SimpleClaimSystem"
     description: "Highly configurable claims plugin allowing you to protect your constructions in chunks. BlueMap integration out of the box"
     author: "Xyness"
-    apiVersion: ""
+    apiVersion: "2"
     platforms: ["spigot", "paper", "folia"]
     links: {
       "modrinth": "https://modrinth.com/plugin/simpleclaimsystem/"