docs: add gantt option

docs/assets/option/en/table/gantt.md

@@ -162,3 +162,27 @@ For specific reference, see the configuration in ListTable: [Specific configurat
 Pixel ratio.
 
 Optional
+
+## dateFormat(string)
+
+The date format of the new schedule. The date data will be added to the date field value in the data record. The default value is 'yyyy-mm-dd'.
+
+Not required
+
+```
+dateFormat?:
+| 'yyyy-mm-dd'
+| 'dd-mm-yyyy'
+| 'mm/dd/yyyy'
+| 'yyyy/mm/dd'
+| 'dd/mm/yyyy'
+| 'yyyy.mm.dd'
+| 'dd.mm.yyyy'
+| 'mm.dd.yyyy';
+```
+
+## underlayBackgroundColor(string)
+
+The fill color of the canvas outside the drawing range is '#fff' by default, and it also matches the background color of the table on the left.
+
+Not required

docs/assets/option/zh/table/gantt.md

@@ -162,3 +162,27 @@
 像素比率。
 
 非必填
+
+## dateFormat(string)
+
+新建排期的日期格式，日期数据将被添加到数据 record 中日期字段值中，默认为'yyyy-mm-dd'。
+
+非必填
+
+```
+  dateFormat?:
+    | 'yyyy-mm-dd'
+    | 'dd-mm-yyyy'
+    | 'mm/dd/yyyy'
+    | 'yyyy/mm/dd'
+    | 'dd/mm/yyyy'
+    | 'yyyy.mm.dd'
+    | 'dd.mm.yyyy'
+    | 'mm.dd.yyyy';
+```
+
+## underlayBackgroundColor(string)
+
+绘制范围外的 canvas 上填充的颜色，默认为'#fff'，同时也适配到左侧表格的背景色。
+
+非必填