Update JoinChain swagger doc.
@@ -248,20 +248,30 @@ func GetFileMultipart(ctx echo.Context, fieldname string) ([]byte, error) {
//
// Join chain
//
+// {
+// "nid": "1",
+// "role": "0",
+// "seedAddress": "http://localhost:8080"
+// }
+//
// ---
// consumes:
-// - application/json
+// - multipart/form-data
//
// produces:
// - application/json
//
// parameters:
-// - name: JoinChainParam
-// description: join chain param
-// in: body
+// - name: json
+// description: join chain param json
+// in: formData
// required: true
-// schema:
-// $ref: '#/definitions/JoinChainParam'
+// type: string
+// - name: genesisZip
+// description: genesis storage file
+// in: formData
+// required: true
+// type: file
//
// responses:
// 200:
