FIX repository edit api

README.md

@@ -471,6 +471,7 @@ curl -X GET http://localhost:3000/api/18816895620/mirror_demo/edit.json | jq
 |project_description  |string|项目简介|
 |project_category_id  |int|项目类别id|
 |project_language_id  |int|项目语言id|
+|private              |boolean|项目是否私有, true：为私有，false: 公开  |
 
 
 返回值
@@ -482,7 +483,8 @@ curl -X GET http://localhost:3000/api/18816895620/mirror_demo/edit.json | jq
   "project_identifier": "mirror_demo",
   "project_description": "my first project mirror_demo",
   "project_category_id": 1,
-  "project_language_id": 2
+  "project_language_id": 2,
+  "private": false
 }
 ```
 ---

app/views/repositories/edit.json.jbuilder

@@ -5,3 +5,4 @@ json.project_identifier @repo.project.identifier
 json.project_description @repo&.project.description
 json.project_category_id @repo&.project.project_category_id
 json.project_language_id @repo&.project.project_language_id
+json.private @repo.hidden