Add example with comparing text of two elements using "should(cb)"

[bahmutov]

Users are struggling when comparing two text elements on the page and try write complicated things like this one

const ticketClass = () => cy.get(ele).first().invoke('text').then(($text) => {
            const newEle = () => $text.charAt(0).toUpperCase() + $text.slice(1)
            cy.get(ele2).first().invoke('text').should('have.text', newEle)
        })

Need to add a good example to should(cb): https://docs.cypress.io/api/commands/should.html#Function