Update README.md according to previous commit enabling specific branches to be used from GitHub.

Author: AlperShal

README.md

@@ -48,6 +48,8 @@ docker run --rm \
 -e CertPass=YOUR_CERTs_PASSWORD \
 -e TVIpAddress=YOUR_TVs_IP_ADDRESS \
 -e ACCEPT_TIZEN_STUDIO_LICENSE=0 \
+-e JELLYFIN_WEB_BRANCH=release-10.9.z \
+-e JELLYFIN_TIZEN_BRANCH=master \
 -it jellyfin-tizen-builder:latest
 
 ```