feat: add documents of customDistribution

Author: xuefei1313

docs/assets/option/en/component/axis-common/linear-axis.md

@@ -113,3 +113,17 @@ Truncation graphic rotation angle configuration.
 ###${prefix} style(Object)
 
 The style configuration of the truncation graphic, you can configure the line width (`lineWidth`), color (`stroke`), etc.
+
+#${prefix} customDistribution(Array)
+
+Supported since version **2.0.16**
+
+Applies only when the axis is a linear axis. Custom interval distribution configuration, used to define the visual proportion of specific data intervals on the axis.
+
+##${prefix} domain(number[])
+
+The data interval [min, max].
+
+##${prefix} ratio(number)
+
+The proportion of the visual range this interval should occupy, value between 0 and 1.

docs/assets/option/zh/component/axis-common/linear-axis.md

@@ -115,3 +115,17 @@
 ###${prefix} style(Object)
 
 截断图形的样式配置，可以配置线宽(`lineWidth`)、颜色(`stroke`)等。
+
+#${prefix} customDistribution(Array)
+
+自**2.0.16**版本开始支持
+
+仅当轴为线性轴时生效。自定义区间分布配置，用于定义特定数据区间在轴上的视觉占比。
+
+##${prefix} domain(number[])
+
+数据区间 [min, max]。
+
+##${prefix} ratio(number)
+
+该区间在视觉范围内所占的比例，取值范围 0 到 1。