refactor: update startparameters in wurmserver config

The startparameters variable in the wurmserver config file has been updated to remove unnecessary single quotes around the gamemode parameter. This change improves consistency and readability of the code.

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

@@ -52,7 +52,7 @@ queryport="27016"
 
 ## Server Parameters | https://docs.linuxgsm.com/configuration/start-parameters#additional-parameters
 # Parameters are edited in the game server config file.
-startparameters="start='${gamemode}' adminpwd='${adminpassword}' epicsettings='${epicsettings}' externalport='${port}' homeserver='${homeserver}' homekingdom='${homekingdom}' loginserver='${loginserver}' maxplayers='${maxplayers}' queryprort='${queryport}' rmiport='${rmiport}' rmiregport='${rmiregport}' servername='${servername}' serverpassword='${serverpassword}' start='${start}' ip='${ip}'"
+startparameters="start=${gamemode} adminpwd='${adminpassword}' epicsettings='${epicsettings}' externalport='${port}' homeserver='${homeserver}' homekingdom='${homekingdom}' loginserver='${loginserver}' maxplayers='${maxplayers}' queryprort='${queryport}' rmiport='${rmiport}' rmiregport='${rmiregport}' servername='${servername}' serverpassword='${serverpassword}' start='${start}' ip='${ip}'"
 
 #### LinuxGSM Settings ####