doc(marker): add relativeTo

apache/echarts#20166

Author: Ovilia

en/api/echarts.md

@@ -235,7 +235,7 @@ Registers a theme, should be specified when [initialize the chart instance](~ech
 
 ## registerCustomSeries(Function)
 
-> Since `6.0.0`
+{{ use: partial-version(version: '6.0.0') }}
 
 Register a custom series. After registration, it can be used as [series-custom.type](option.html#series-custom.type) in [setOption](~api.html#echartsInstance.setOption).
 

en/option/partial/mark-point.md

@@ -167,6 +167,12 @@ X position according to container, in pixel.
 
 Y position according to container, in pixel.
 
+###${prefix} relativeTo('container' | 'coordinate')
+
+{{ use: partial-version(version: '6.0.0') }}
+
+Specify whether the positions of [x](~series-${seriesType}.markPoint.data.x) and [y](~series-${seriesType}.markPoint.data.y) are relative to the entire chart container (`'container'`, default) or the grid coordinate system (`'coordinate'`).
+
 ###${prefix} value(number)
 
 Label value, which can be ignored.

zh/api/echarts.md

@@ -231,7 +231,7 @@ echarts.registerMap('USA', usaJson, {
 
 ## registerCustomSeries(Function)
 
-> 从 `6.0.0` 开始支持
+{{ use: partial-version(version: '6.0.0') }}
 
 ```ts
 (type: string, renderItem: Function) => void

zh/option/partial/mark-point.md

@@ -167,6 +167,12 @@ data: [{{ if: ${hasType} }}
 
 相对容器的屏幕 y 坐标，单位像素。
 
+###${prefix} relativeTo('container' | 'coordinate')
+
+{{ use: partial-version(version: '6.0.0') }}
+
+指定 [x](~series-${seriesType}.markPoint.data.x) 和 [y](~series-${seriesType}.markPoint.data.y) 是相对于整个图表容器（`'container'`，默认值）还是直角坐标系（`'coordinate'`）而言的位置。
+
 ###${prefix} value(number)
 
 标注值，可以不设。