Documentation changes for new -SecurityDescriptorSddl parameter in Set-Service (#3880)

* Documentation changes for new parameter in Set-Service

* revert changes in v6

* change v7 doc

* Revert "change v7 doc"

This reverts commit 7ac5703.

* Revert "revert changes in v6"

This reverts commit 62d1516.

* revert v6 changes

* add changes to v7

Author: kvprasoon

reference/7/Microsoft.PowerShell.Management/Set-Service.md

@@ -19,15 +19,15 @@ Starts, stops, and suspends a service, and changes its properties.
 
 ```
 Set-Service [-Name] <String> [-DisplayName <String>] [-Credential <PSCredential>] [-Description <String>]
- [-StartupType <ServiceStartupType>] [-Status <String>] [-PassThru] [-WhatIf] [-Confirm]
+ [-StartupType <ServiceStartupType>] [-Status <String>] [-SecurityDescriptorSddl <String>] [-PassThru] [-WhatIf] [-Confirm]
  [<CommonParameters>]
 ```
 
 ### InputObject
 
 ```
 Set-Service [-InputObject] <ServiceController> [-DisplayName <String>] [-Credential <PSCredential>]
- [-Description <String>] [-StartupType <ServiceStartupType>] [-Status <String>] [-PassThru] [-WhatIf]
+ [-Description <String>] [-StartupType <ServiceStartupType>] [-SecurityDescriptorSddl <String>] [-Status <String>] [-PassThru] [-WhatIf]
  [-Confirm] [<CommonParameters>]
 ```
 
@@ -159,6 +159,19 @@ The command stores the credentials in the `$credential` variable.
 
 The second command changes the credentials of the Schedule service.
 
+### Example 9: Change the SecurityDescriptor of a service
+
+```powershell
+$SDDLToSet = "D:(A;;CCLCSWRPWPDTLOCRRC;;;SY)(A;;CCDCLCSWRPWPDTLOCRSDRCWDWO;;;BA)(A;;CCLCSWLOCRRC;;;SU)"
+Set-Service -Name "BITS" -SecurityDescriptorSddl $SDDLToSet
+```
+
+These commands changes SecurityDescriptor of the BITS service.
+
+The command stores the SecurityDescriptor in the `$SDDLToSet` variable.
+
+The second command changes the SecurityDescriptor of the BITS service.
+
 ## PARAMETERS
 
 ### -Credential
@@ -314,6 +327,22 @@ Accept pipeline input: False
 Accept wildcard characters: False
 ```
 
+### -SecurityDescriptorSddl
+
+Specifies the SecurityDescriptor for the service in Sddl format.
+
+```yaml
+Type: String
+Parameter Sets: (All)
+Aliases:
+
+Required: False
+Position: Named
+Default value: None
+Accept pipeline input: False
+Accept wildcard characters: False
+```
+
 ### -Confirm
 
 Prompts you for confirmation before running the cmdlet.