Fixed the added e2e-test with respect to the added link

[examples/angular-tour-of-heroes] / cypress / integration / heroes-spec.ts

describe('The Home Page', () => {
  it('successfully loads', () => {
    cy.visit('/');
    cy.get('app-root nav a[routerLink="/heroes"').click();
    cy.url().should('include', '/heroes');
  });
})