Change unique message

Author: AnechaS

example/custom-messages.js

@@ -15,7 +15,7 @@ const messages = {
   required: '{path} is required',
   enum: '{path} is invalid',
   validate: '{path} is invalid',
-  unique: '{path} is already exists',
+  unique: '{path} already exists',
   boolean: '{path} must be a boolean',
   buffer: '{path} must be a buffer',
   objectId: '{path} must be a objectId',

example/unique.js

@@ -25,7 +25,7 @@ object.save(function (err, doc) {
     const error = mongooseErrorHandler(err);
     console.log(error);
     /**
-     * Error [MongooseValidatorError]: "name" is already exists
+     * Error [MongooseValidatorError]: "name" already exists
      * name: 'MongooseValidatorError',
      * path: 'name',
      * kind: 'unique',