fix overlap of legend with chart by correcting the chart bounds
fix overlap of legend with chart by correcting the chart bounds

OurWorldInData/owid-grapher,OurWorldInData/owid-grapher,owid/owid-grapher,owid/owid-grapher,OurWorldInData/our-world-in-data-grapher,OurWorldInData/owid-grapher,OurWorldInData/our-world-in-data-grapher,owid/owid-grapher,OurWorldInData/owid-grapher,owid/owid-grapher,OurWorldInData/our-world-in-data-grapher,OurWorldInData/owid-grapher,owid/owid-grapher,OurWorldInData/our-world-in-data-grapher