[Commands] Cleanup #shownpcgloballoot and #showzonegloballoot Command. (#2141)

- Cleanup messages and logic.

zone/gm_commands/showzonegloballoot.cpp

@@ -4,10 +4,13 @@ void command_showzonegloballoot(Client *c, const Seperator *sep)
 {
 	c->Message(
 		Chat::White,
-		"GlobalLoot for %s (%d:%d)",
-		zone->GetShortName(),
-		zone->GetZoneID(),
-		zone->GetInstanceVersion());
+		fmt::format(
+			"Global loot for {} ({}).",
+			zone->GetLongName(),
+			zone->GetZoneID()
+		).c_str()
+	);
+
 	zone->ShowZoneGlobalLoot(c);
 }