fix (game server): remove " as per recommendation

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

@@ -18,7 +18,7 @@ maxplayers="8" # Can't be adjusted currently
 
 ## Server Start Command | https://github.com/GameServerManagers/LinuxGSM/wiki/Start-Parameters#additional-parameters
 fn_parms(){
-parms="Port=${port}?QueryPort=${queryport} -startup_map \"${defaultmap}\" -server_name \"${servername}\""
+parms="Port=${port}?QueryPort=${queryport} -startup_map ${defaultmap} -server_name \"${servername}\""
 }
 
 #### LinuxGSM Settings ####