Fix typo in error message

src/libs/routes/classroomCount.js

@@ -212,7 +212,7 @@ classroomCountApp.post('/', rqf.parse(), (req, res, next) => {
 
     if(classSize == null || integralTime == null) {
         res.statusCode = 400;
-        return res.json({err: {message: "There was an error processing class_size or integral_time. Check your JSON sintax and be sure you're sending both paramenters."}});
+        return res.json({err: {message: "There was an error processing class_size or integral_time. Check your JSON sintax and be sure you're sending both parameters."}});
     }
 
     req.classroom = req.result;