add new param DisableSiteBranding for Set-SPOSite command

Author: RongqiZ

sharepoint/sharepoint-ps/Microsoft.Online.SharePoint.PowerShell/Set-SPOSite.md

@@ -61,7 +61,9 @@ Set-SPOSite [-Identity] <SpoSitePipeBind> [-Owner <String>] [-Title <String>] [-
  [-RestrictedAccessControl <Boolean>] [-RestrictedAccessControlGroups <Guid[]>]
  [-ListsShowHeaderAndNavigation <Boolean>] [-HidePeoplePreviewingFiles <Boolean>]
  [-HidePeopleWhoHaveListsOpen <Boolean>] [-AllowFileArchive <Boolean>]
- [-AllowWebPropertyBagUpdateWhenDenyAddAndCustomizePagesIsEnabled <Boolean>] [-WhatIf] [-Confirm]
+ [-AllowWebPropertyBagUpdateWhenDenyAddAndCustomizePagesIsEnabled <Boolean>]
+ [-DisableSiteBranding <Boolean>]
+ [-WhatIf] [-Confirm]
  [<CommonParameters>]
 ```
 
@@ -956,6 +958,25 @@ Accept pipeline input: False
 Accept wildcard characters: False
 ```
 
+### -DisableSiteBranding
+
+> Applicable: SharePoint Online
+Enables or disables site branding. When `DisableSiteBranding` is set to `$true`, the site branding is disabled on the site collection.
+
+PARAMVALUE: True | False
+
+```yaml
+Type: System.Boolean
+Parameter Sets: ParamSet1
+Aliases:
+
+Required: False
+Position: Named
+Default value: None
+Accept pipeline input: False
+Accept wildcard characters: False
+```
+
 ### -EnableAutoExpirationVersionTrim
 
 > Applicable: SharePoint Online