add global nav (#220)

docs/api/index.md

@@ -6,6 +6,7 @@ outline: deep
 
 - [Specification](/api/description/specification)
 - [Conditions](/api/description/conditions)
+- [Global-interfaces](/api/description/global-interfaces)
 
 ## Scripts API
 

docs/zh/api/index.md

@@ -5,7 +5,8 @@ outline: deep
 ## 描述域 API
 
 - [接口规范](/zh/api/description/specification)
-- [添加判断](/zh/api/description/conditions)
+- [条件判断](/zh/api/description/conditions)
+- [全局接口](/zh/api/description/global-interfaces)
 
 ## 脚本域 API