fix(sof2): correct config location (#4739)

lgsm/config-default/config-lgsm/sof2server/_default.cfg

@@ -142,7 +142,7 @@ glibc="2.1"
 # Edit with care
 
 ## Game Server Directories
-systemdir="${serverfiles}/main"
+systemdir="${serverfiles}/base"
 executabledir="${serverfiles}"
 executable="./sof2ded"
 servercfgdir="${systemdir}"