fix helper index字段

@@ -10,10 +10,10 @@
       "id": {
         "type": "integer"
       },
-      "first_category_id": {
+      "firstCategoryId": {
         "type": "integer"
       },
-      "secend_category_id": {
+      "secendCategoryId": {
         "type": "String",
         "analyzer": "ik_max_word"
       },
@@ -25,19 +25,19 @@
         "type": "String",
         "index": "not_analyzed"
       },
-      "helper_type": {
+      "helperType": {
         "type": "integer"
       },
-      "is_faq": {
+      "isFaq": {
         "type": "integer"
       },
-      "is_robot_qa": {
+      "isRobotQa": {
         "type": "integer"
       },
-      "is_customer_service": {
+      "isCustomerService": {
         "type": "integer"
       },
-      "show_platform": {
+      "showPlatform": {
         "type": "string",
         "analyzer":"comma_spliter"
       },
@@ -48,13 +48,13 @@
       "status": {
         "type": "integer"
       },
-      "order_by": {
+      "orderBy": {
         "type": "integer"
       },
       "hits": {
         "type": "integer"
       },
-      "create_time": {
+      "createTime": {
         "type": "integer"
       }
     }