update size

README.md

@@ -13,7 +13,7 @@ This is a URL shorter written in Python with Flask als Webhandler. The Webserver
 * small and modern UI
 * posibility to use multiple domains
 * open source --> posibility to expand
-* very small and leightweight (at the moment the sourcecode is about 4mb)
+* very small and leightweight (at the moment the sourcecode is about 2mb)
 
 [![pipeline status](http://gitlab.jonasled.de/jonasled/url_shorter_docker/badges/master/pipeline.svg)](http://gitlab.jonasled.de/jonasled/url_shorter_docker/commits/master)