use correct config name

NEWS.md

@@ -2,8 +2,8 @@
 
 - Add ability to retrieve an SSH public key from an Azure resource object. See `?user_config` for more information.
 - New predefined configurations for VMs and VM scalesets: Ubuntu 20.04; Debian 10 (w/backports); Centos 8.1; RHEL 8.1 and 8.2; Windows Server 2019. All new configurations except Centos are available as both generation 1 and generation 2 VMs. See `?vm_config` and `?vmss_config` for more information.
-- Update the DSVM configuration functions `linux_dsvm` and `windows_dsvm` to use the latest images. The Linux DSVM no longer has a built-in data disk, so the `dsvm_disk_type` argument has been removed.
-  - New `linux_dsvm_gen2` configuration to create a gen2 Linux DSVM.
+- Update the DSVM configuration functions `ubuntu_dsvm` and `windows_dsvm` to use the latest images. The Ubuntu DSVM no longer has a built-in data disk, so the `dsvm_disk_type` argument has been removed.
+  - New `ubuntu_dsvm_gen2` configuration to create a gen2 Ubuntu DSVM.
 - Fix a bug that prevented Windows scalesets from being created.
 
 # AzureVM 2.1.1