Fix: 修正文档错误 #98

Author: doraemonext

docs/docs/official/message.md

@@ -443,15 +443,15 @@ elif wechat.message.type in ['scancode_push', 'scancode_waitmsg', 'pic_sysphoto'
                 "value": "恭喜你购买成功！",
                 "color": "#173177"
             },
-            "keynote1":{
+            "keyword1":{
                 "value": "巧克力",
                 "color": "#173177"
             },
-            "keynote2": {
+            "keyword2": {
                 "value": "39.8元",
                 "color": "#173177"
             },
-            "keynote3": {
+            "keyword3": {
                 "value": "2014年9月16日",
                 "color": "#173177"
             },