.dotnet.hostname: get network name like other backends [skip ci]

Author: scivision

+stdlib/+dotnet/hostname.m

@@ -1,9 +1,11 @@
 %% DOTNET.GET_HOSTNAME get the computer network hostname
-% not necessary FQDN
 
 function n = hostname()
 
-n = char(System.Environment.MachineName);
+%n = char(System.Environment.MachineName);
 % https://learn.microsoft.com/en-us/dotnet/api/system.environment.machinename
 
+n = char(System.Net.Dns.GetHostName());
+% https://learn.microsoft.com/en-us/dotnet/api/system.net.dns.gethostname
+
 end