Fix systemd not breaking whitespace in env vars

This is particularly important for JELLYFIN_ADDITIONAL_OPTS, where the
user is most likely to want to specify more than one word.

debian/jellyfin.service

@@ -8,7 +8,7 @@ EnvironmentFile = /etc/default/jellyfin
 User = jellyfin
 Group = jellyfin
 WorkingDirectory = /var/lib/jellyfin
-ExecStart = /usr/bin/jellyfin ${JELLYFIN_WEB_OPT} ${JELLYFIN_RESTART_OPT} ${JELLYFIN_FFMPEG_OPT} ${JELLYFIN_SERVICE_OPT} ${JELLYFIN_NOWEBAPP_OPT} ${JELLYFIN_ADDITIONAL_OPTS}
+ExecStart = /usr/bin/jellyfin $JELLYFIN_WEB_OPT $JELLYFIN_RESTART_OPT $JELLYFIN_FFMPEG_OPT $JELLYFIN_SERVICE_OPT $JELLYFIN_NOWEBAPP_OPT $JELLYFIN_ADDITIONAL_OPTS
 Restart = on-failure
 TimeoutSec = 15
 SuccessExitStatus=0 143

fedora/jellyfin.service

@@ -8,7 +8,7 @@ EnvironmentFile = /etc/sysconfig/jellyfin
 User = jellyfin
 Group = jellyfin
 WorkingDirectory = /var/lib/jellyfin
-ExecStart = /usr/bin/jellyfin ${JELLYFIN_WEB_OPT} ${JELLYFIN_RESTART_OPT} ${JELLYFIN_FFMPEG_OPT} ${JELLYFIN_SERVICE_OPT} ${JELLYFIN_NOWEBAPP_OPT} ${JELLYFIN_ADDITIONAL_OPTS}
+ExecStart = /usr/bin/jellyfin $JELLYFIN_WEB_OPT $JELLYFIN_RESTART_OPT $JELLYFIN_FFMPEG_OPT $JELLYFIN_SERVICE_OPT $JELLYFIN_NOWEBAPP_OPT $JELLYFIN_ADDITIONAL_OPTS
 Restart = on-failure
 TimeoutSec = 15
 SuccessExitStatus=0 143