Update Export-DnsServerZone.md

The current docs say you can specify a path as a value for -FileName. The actual cmdlet will not accept this.

Author: it-pro-berlin-de

docset/winserver2022-ps/dnsserver/Export-DnsServerZone.md

@@ -109,7 +109,7 @@ Accept wildcard characters: False
 
 ### -FileName
 Specifies a name for the export file.
-You can include a file path.
+The file will be created in the default DNS directory.
 
 ```yaml
 Type: String