fix config

opensearch-nginx-lb/config.json

@@ -3,11 +3,7 @@
   "version": "1.0.0",
   "slug": "opensearch-nginx-lb",
   "description": "NGINX load balancer for OpenSearch coordinator nodes.",
-  "arch": [
-    "amd64",
-    "armv7",
-    "arm64"
-  ],
+  "arch": ["amd64", "armv7", "aarch64"],
   "startup": "services",
   "boot": "auto",
   "host_network": true,
@@ -27,12 +23,7 @@
   },
   "schema": {
     "lb_port": "int",
-    "coordinator_nodes": [
-      "list",
-      [
-        "str"
-      ]
-    ]
+    "coordinator_nodes": "list(str)"
   },
   "ports": {
     "9200/tcp": 9200