Renamed variable

Server/db/mongo/MongoDB.js

@@ -17,8 +17,8 @@ const connect = async () => {
 
 const checkSuperadmin = async (req, res) => {
   try {
-    const admin = await UserModel.findOne({ role: "superadmin" });
-    if (admin !== null) {
+    const superAdmin = await UserModel.findOne({ role: "superadmin" });
+    if (superAdmin !== null) {
       return true;
     }
     return false;