fix calc typo

utils/src/calc.js

@@ -1,5 +1,5 @@
 module.exports = {
-  userDays: function(user) {
+  userDays: function (user) {
     if (typeof user !== "object") throw new TypeError("Not an Object");
 
     let creation = new Date().getTime() - user.createdAt.getTime();
@@ -8,8 +8,8 @@ module.exports = {
 
     return Math.round(days);
   },
-  serverDays: function(server) {
-    if (typeof user !== "object") throw new TypeError("Not an Object");
+  serverDays: function (server) {
+    if (typeof server !== "object") throw new TypeError("Not an Object");
 
     let creation = new Date().getTime() - server.createdAt.getTime();
 
@@ -17,4 +17,4 @@ module.exports = {
 
     return Math.round(days);
   }
-};
+};