Append new line

Author: TarikGul

registry.json

@@ -814,4 +814,4 @@
       "assetsPalletInstance": null
     }
   }
-}
+}

src/createRegistry.ts

@@ -56,6 +56,7 @@ const unreliableIds = {
  */
 const writeJson = (path: string, data: TokenRegistry): void => {
 	fs.writeFileSync(path, JSON.stringify(data, null, 2));
+	fs.appendFileSync(path, '\n', 'utf-8');
 };
 
 interface AssetsInfo {