refactor the folder structure (Azure#37711)

Co-authored-by: Qiaoqiao Zhang <55688292+qiaozha@users.noreply.github.com>

Author: zedy-wj

…s/preview/2019-07-01-preview/devops.json …s/preview/2019-07-01-preview/devops.jsonspecification/devops/resource-manager/Microsoft.DevOps/preview/2019-07-01-preview/devops.json renamed to specification/devops/resource-manager/Microsoft.DevOps/DevOps/preview/2019-07-01-preview/devops.json specification/devops/resource-manager/Microsoft.DevOps/preview/2019-07-01-preview/devops.json renamed to specification/devops/resource-manager/Microsoft.DevOps/DevOps/preview/2019-07-01-preview/devops.json

@@ -613,7 +613,7 @@
         "systemData": {
           "readOnly": true,
           "description": "The system metadata pertaining to this resource.",
-          "$ref": "../../../../../common-types/resource-management/v2/types.json#/definitions/systemData"
+          "$ref": "../../../../../../common-types/resource-management/v2/types.json#/definitions/systemData"
         }
       },
       "allOf": [