message: Update docs to say 301
diff: @@ -79,14 +79,14 @@ cluster_header
  host_redirect
  *(sometimes required, string)* Indicates that the route is a redirect rule. If there is a match,
  - a 302 redirect response will be sent which swaps the host portion of the URL with this value.
  + a 301 redirect response will be sent which swaps the host portion of the URL with this value.
  *path_redirect* can also be specified along with this option.
  .. _config_http_conn_man_route_table_route_path_redirect:
  path_redirect
  *(sometimes required, string)* Indicates that the route is a redirect rule. If there is a match,
  - a 302 redirect response will be sent which swaps the path portion of the URL with this value.
  + a 301 redirect response will be sent which swaps the path portion of the URL with this value.
  *host_redirect* can also be specified along with this option.
  .. _config_http_conn_man_route_table_route_prefix_rewrite:
  