Update README.md

Author: AndrewMarchukov

README.md

@@ -14,7 +14,7 @@ if you use transmission daemon in docker then do something like that
 ```
 docker network create mynet
 docker run -d -p "9091:9091" --name transmission-daemon transmission-daemon-image
-docker run -d -e HOSTPORT=localhost:9091 -e TR_AUTH=user:password --name=transmission-tracker-add andrewmhub/transmission-tracker-add:latest
+docker run -d -e HOSTPORT=transmission-daemon:9091 -e TR_AUTH=user:password --name=transmission-tracker-add andrewmhub/transmission-tracker-add:latest
 ```
 or do what you want