added array for fix config.json loop

fixed the infinite loop for fetching the config.json file. i added an empty array on line 190

Author: Dev-t05

src/App.js

@@ -187,7 +187,7 @@ function App() {
 
   useEffect(() => {
     getConfig();
-  });
+  }, []);
 
   useEffect(() => {
     getData();