Update jellyfin-install.sh

fix GID mismatch

install/jellyfin-install.sh

@@ -58,6 +58,7 @@ EOF
 # Install Jellyfin using the metapackage (which will fetch jellyfin-server, jellyfin-web, and jellyfin-ffmpeg5)
 $STD apt-get update
 $STD apt-get install -y jellyfin
+sed -i '/^render:x:108:root,jellyfin$/d; s/^ssl-cert:x:104:$/render:x:104:root,jellyfin/' /etc/group
 msg_ok "Installed Jellyfin"
 
 motd_ssh