change readme

README.md

 使用 windows
 ```cmd
 fun deploy
-```
+```
+
+### 示例
+
+```
+POST /sms
+```
+
+Body 数据如下: (JSON) 
+```json
+{
+    "PhoneNumbers": "17714208769",
+    "SignName": "云致科技",
+    "TemplateCode": "SMS_207555188",
+    "TemplateParam": "{\"code\":\"1234\"}"
+}
+```
+