update services.xml
update services.xml

* mark `phpmentors_proxy_url_rewrite.proxy_url_collection` as non-public
* mark `phpmentors_proxy_url_rewrite.proxy_url_factory` as non-public

phpmentors-jp/proxy-url-rewrite-bundle,iteman/proxy-url-rewrite-bundle,iteman/proxy-url-rewrite-bundle,phpmentors-jp/proxy-url-rewrite-bundle