Fix typo in the legend documentation (#5348)
Fix typo in the legend documentation (#5348)


chartjs/Chart.js,chartjs/Chart.js,simonbrunel/Chart.js,chartjs/Chart.js,touletan/Chart.js,touletan/Chart.js,jtcorbett/Chart.js,nnnick/Chart.js,chartjs/Chart.js,touletan/Chart.js,jtcorbett/Chart.js,simonbrunel/Chart.js,touletan/Chart.js