Update A record format to an array

Changed the A record to be an array instead of a string.

domains/sandro.json

@@ -1,9 +1,9 @@
 {
-  "owner": {
-    "username": "sandro21",
-    "email": "sandroqarqusashvili@gmail.com"
-  },
-  "records": {
-    "A": "216.198.79.1"
-  }
+    "owner": {
+        "username": "sandro21",
+        "email": "sandroqarqusashvili@gmail.com"
+    },
+    "records": {
+        "A": ["216.198.79.1"]
+    }
 }