fix role for set content

tracim/views/contents_api/html_document_controller.py

     @hapic.handle_exception(InsufficientUserProfile, HTTPStatus.FORBIDDEN)
     @hapic.handle_exception(WorkspaceNotFound, HTTPStatus.FORBIDDEN)
     @hapic.handle_exception(AuthenticationFailed, HTTPStatus.BAD_REQUEST)
+    @require_workspace_role(UserRoleInWorkspace.CONTRIBUTOR)
     @require_content_types([htmlpage_type])
     @hapic.input_path(WorkspaceAndContentIdPathSchema())
     @hapic.input_body(SetContentStatusSchema())