add place in api /duty/info

doc/api.md

@@ -44,7 +44,8 @@ data:
 {
   "isInDuty": true,
   "inDutyCnt": 3,
-  "currentDuty": "2"
+  "currentDuty": "2",
+  "place": "东三-204"
 }
 ```
 

mock/api.ts

@@ -10,6 +10,7 @@ export default {
       isInDuty: true,
       inDutyCnt: 3,
       currentDuty: '2',
+      place: '东三-204',
     },
   },
   'GET /user/info': {