grid.y.lines expects an object, but billboard.js takes an array of line objects

[erickakoyama]

grid.y.lines should be an array not an object.
grid.y.lines = Config.array()

clay/packages/clay-charts/src/ChartBase.js

Lines 994 to 999 in c01e3e4

	lines: Config.shapeOf({
	class: Config.string(),
	position: Config.oneOf(['start', 'middle', 'end']),
	text: Config.string(),
	value: Config.string(),
	}),