fix: tfcserver/_default.cfg Ip flag (#3859)

`_ip` => `+ip`

lgsm/config-default/config-lgsm/tfcserver/_default.cfg

@@ -16,7 +16,7 @@ defaultmap="dustbowl"
 maxplayers="16"
 
 ## Server Parameters | https://docs.linuxgsm.com/configuration/start-parameters#additional-parameters
-startparameters="-game tfc -strictportbind _ip ${ip} -port ${port} +clientport ${clientport} +map ${defaultmap} +servercfgfile ${servercfg} -maxplayers ${maxplayers}"
+startparameters="-game tfc -strictportbind +ip ${ip} -port ${port} +clientport ${clientport} +map ${defaultmap} +servercfgfile ${servercfg} -maxplayers ${maxplayers}"
 
 #### LinuxGSM Settings ####