Changed from code_prefix to something more FidoNetty: areatag_prefix

Also add an areatag_prefix and echolist filename for VKRadio net.

exec/init-fidonet.ini

@@ -39,7 +39,7 @@ addr = 21:1/100
 host = agency.bbs.nz
 port = 24556
 echolist = https://raw.githubusercontent.com/fsxnet/infopack/master/FSXNET.NA
-code_prefix = FSX_
+areatag_prefix = FSX_
 
 [zone:39]
 name = AmigaNet
@@ -60,7 +60,7 @@ email = accessd@pharcyde.org
 addr = 46:1/100
 host = pharcyde.org
 echolist = agoranet.na
-code_prefix = AGN_
+areatag_prefix = AGN_
 
 [zone:432]
 name = VKRadio
@@ -70,3 +70,5 @@ coord = Tony Langdon
 email = vk3jed@vkradio.com
 addr = 432:1/100
 dns = ftn.vkradio.com
+echolist = VKRADIO.NA
+areatag_prefix = VK_