update docs/uniCloud/cf-functions.md.

docs/uniCloud/cf-functions.md

@@ -60,7 +60,7 @@ exports.main = async (event, context) => {
 
 |API						|描述																					|
 |--							|--																						|
-|uniCloud.callFunction()	|云函数中调用另一个云函数 [见下](uniCloud/cf-functions?id=callbyfunction)				|
+|uniCloud.callFunction()	|客户端调用云函数 [见下](uniCloud/cf-functions?id=clientcallfunction)；云函数中调用另一个云函数 [见下](uniCloud/cf-functions?id=callbyfunction)				|
 |uniCloud.database()		|云数据库对象 [详情](uniCloud/cf-database.md)											|
 |uniCloud.uploadFile()		|云函数上传文件到云存储 [详情](uniCloud/storage?id=clouduploadfile)							|
 |uniCloud.downloadFile()	|云函数下载云存储的文件到云函数运行环境 [详情](uniCloud/storage?id=clouddownloadfile)	|