changed parameter name from forest_root_dns_domain to dns_domain_name (to match documentation and other win_domain* modules) and fix example which has win_domain_controller instead of win_domain for module name. (#23081)

(cherry picked from commit 4eba248a8e)

lib/ansible/modules/windows/win_domain.ps1

@@ -37,7 +37,7 @@ Function Ensure-Prereqs {
 
 $parsed_args = Parse-Args $args -supports_check_mode $true
 $check_mode = Get-AnsibleParam $parsed_args "_ansible_check_mode" -default $false
-$forest_root_dns_domain = Get-AnsibleParam $parsed_args "forest_root_dns_domain" -failifempty $true
+$dns_domain_name = Get-AnsibleParam $parsed_args "dns_domain_name" -failifempty $true
 $safe_mode_admin_password = Get-AnsibleParam $parsed_args "safe_mode_password" -failifempty $true
 
 $forest = $null
@@ -54,7 +54,7 @@ $result = @{changed=$false; reboot_required=$false}
 Ensure-Prereqs
 
 Try {
-    $forest = Get-ADForest $forest_root_dns_domain -ErrorAction SilentlyContinue
+    $forest = Get-ADForest $dns_domain_name -ErrorAction SilentlyContinue
 }
 Catch { }
 
@@ -65,7 +65,7 @@ If(-not $forest) {
         $sm_cred = ConvertTo-SecureString $safe_mode_admin_password -AsPlainText -Force
 
         $install_forest_args = @{
-            DomainName=$forest_root_dns_domain;
+            DomainName=$dns_domain_name;
             SafeModeAdministratorPassword=$sm_cred;
             Confirm=$false;
             SkipPreChecks=$true;

lib/ansible/modules/windows/win_domain.py

@@ -54,7 +54,7 @@ reboot_required:
 
 EXAMPLES=r'''
 # ensure the named domain is reachable from the target host; if not, create the domain in a new forest residing on the target host
-- win_domain_controller:
+- win_domain:
     dns_domain_name: ansible.vagrant
     safe_mode_password: password123!