Fix filter name

src/libs/convert/citySize.js

 module.exports = function citySize(id) {
     switch (id) {
         case 1:
-        return 'até 5000';
+        return '0 - 5000';
         case 2:
         return '5001 - 10000';
         case 3:

src/libs/routes/population.js

@@ -41,7 +41,7 @@ populationApp.get('/years', (req, res, next) => {
 
 populationApp.get('/city_size', (req, res, next) => {
     req.result = [
-        {id: 1, name: "até 5000"},
+        {id: 1, name: "0 - 5000"},
         {id: 2, name: "5001 - 10000"},
         {id: 3, name: "10001 - 20000"},
         {id: 4, name: "20001 - 50000"},