Make description more accessible in the example configuration file

Also don't enable this by default, as "nobody" may not exist everywhere

dnscrypt-proxy/example-dnscrypt-proxy.toml

@@ -40,10 +40,10 @@ listen_addresses = ['127.0.0.1:53', '[::1]:53']
 
 max_clients = 250
 
-## After binding to the port(s) user privileges are dropped by calling itself
-## via exec.command() with SysProcAttr.Credential()
 
-username = 'nobody'
+## Switch to a non-privileged system user after listeneing sockets have been created
+
+# username = 'nobody'
 
 
 ## Require servers (from static + remote sources) to satisfy specific properties