fix(tiny): type define

Author: hustcc

src/plots/tiny-line/constants.ts

@@ -5,7 +5,7 @@ export const DEFAULT_TOOLTIP_OPTIONS = {
   showTitle: false,
   shared: true,
   showMarkers: false,
-  customContent: (x: number, data: Data) => `${get(data, [0, 'data', 'y'], 0).toFixed(1)}`, // 默认给个格式化
+  customContent: (x: string, data: any[]) => `${get(data, [0, 'data', 'y'], 0).toFixed(1)}`, // 默认给个格式化
   containerTpl: '<div class="g2-tooltip"><div class="g2-tooltip-list"></div></div>',
   itemTpl: '<span>{value}</span>',
   domStyles: {