fix(doc): doc anchor

Author: phphe

packages/docs-site/docs/en/v2/api.md

@@ -771,11 +771,11 @@ import { dragContext } from '@he-tree/vue/vue2'
 
 #### startInfo
 
-Type: [StartInfo](#StartInfo). Info about drag start.
+Type: [StartInfo](#startinfo-1). Info about drag start.
 
 #### targetInfo
 
-Type: [StartInfo](#StartInfo). Info about drag target.
+Type: [StartInfo](#startinfo-1). Info about drag target.
 
 #### dragNode
 

packages/docs-site/docs/zh/v2/api.md

@@ -770,11 +770,11 @@ import { dragContext } from '@he-tree/vue/vue2'
 
 #### startInfo
 
-类型: [StartInfo](#StartInfo). 拖拽开始的信息.
+类型: [StartInfo](#startinfo-1). 拖拽开始的信息.
 
 #### targetInfo
 
-类型: [StartInfo](#StartInfo). 拖拽的目标的信息.
+类型: [StartInfo](#startinfo-1). 拖拽的目标的信息.
 
 #### dragNode