Donut chart follow-up issues:

[christiemolloy]

• step 2, no.2: this step should be bolded
• step 3, no.2: locate the component instead
• step 3, no.3: change to back-ticks
• step 3, no.3 break up steps into constrainT and labels
• step 4, no.2: locate the ChartDonut
• step 4, no.2, change the order of the code
• step 4, no.4/5/6 change to ChartDonut
• update image at the bottom
• step 5: change to ChartDonut (don't need to locate the code)??
• update final image too