Format JSON per @ok-coder1 review

domains/karimsangid.json

@@ -1 +1,9 @@
-{"owner":{"username":"karimsangid","email":"karimsangid@gmail.com"},"records":{"CNAME":"karimsangid.github.io"}}
+{
+    "owner": {
+        "username": "karimsangid",
+        "email": "karimsangid@gmail.com"
+    },
+    "records": {
+        "CNAME": "karimsangid.github.io"
+    }
+}