fixing syntax error

Author: Bruno Trigueiro

core/services/bandsService.js

@@ -12,7 +12,7 @@ class BandsService {
     this.db = db;
     this.albumsService = AlbumsService;
   }
-  
+
   findAll() {
     return new Promise((resolve, reject) => {
       this.db.find({ docType: BAND }, (err, bands) => {
@@ -44,14 +44,15 @@ class BandsService {
       });
     });
   }
-  
+
   find(_id) {
     return new Promise((resolve, reject) => {
       this.db.findOne({docType: BAND, _id}, (err, band) => {
         // TODO: Usar albumService.findByBand y buscar en la base de datos los artistas de la banda.
-        
+
+      });
     });
   }
 }
 
-module.exports = BandsService;
+module.exports = BandsService;