message: API: Fix /api/message/count unit test description
diff: @@ -69,7 +69,7 @@ describe('Message', async () => {
  expect(result).to.have.status(400);
  });
  - it('should return messages for chat room', async () => {
  + it('should return message count for chat room', async () => {
  const student = await FixtureUtils.getRandomStudent();
  const course = await FixtureUtils.getRandomCourse() as ICourseModel;
  