Renaming the tests

ExerciseDetail.spec.tsx

import { shallow } from 'enzyme';
import * as React from 'react';
import { ExerciseDetail } from './';

describe('ExerciseDetail', () => {
  it('should display the warning when it\'s present in the exercise', () => {
    /* ... */
  });
  
  it('should not display the warning when it\'s not set in the exercise', () => {
    /* ... */
  });

  it('should render a list multiple tags', () => {
    /* ... */
  });

});