Update Set-SPOTenant.md

Adding CommentsOnFilesDisabled cmdlet.

Author: StephenRiceMSFT

sharepoint/sharepoint-ps/sharepoint-online/Set-SPOTenant.md

@@ -26,7 +26,7 @@ Set-SPOTenant [-ApplyAppEnforcedRestrictionsToAdHocRecipients <Boolean>]
  [-ShowAllUsersClaim <Boolean>] [-ShowEveryoneClaim <Boolean>]
  [-ShowEveryoneExceptExternalUsersClaim <Boolean>] [-SignInAccelerationDomain <String>]
  [-StartASiteFormUrl <String>] [-UsePersistentCookiesForExplorerView <Boolean>]
- [-CommentsOnSitePagesDisabled <Boolean>] [-SocialBarOnSitePagesDisabled <Boolean>]
+ [-CommentsOnSitePagesDisabled <Boolean>] [-CommentsOnFilesDisabled <Boolean>] [-SocialBarOnSitePagesDisabled <Boolean>]
  [-DefaultSharingLinkType <SharingLinkType>]
  [-DisabledWebPartIds <Guid>]
  [-DisallowInfectedFileDownload <Boolean>] [-EnableGuestSignInAcceleration <Boolean>]
@@ -581,6 +581,23 @@ Accept wildcard characters: False
 PARAMVALUE: $true | $false
 
 
+```yaml
+Type: Boolean
+Parameter Sets: (All)
+Aliases: 
+Applicable: SharePoint Online
+
+Required: False
+Position: Named
+Default value: None
+Accept pipeline input: False
+Accept wildcard characters: False
+```
+
+### -CommentsOnFilesDisabled
+PARAMVALUE: $true | $false
+
+
 ```yaml
 Type: Boolean
 Parameter Sets: (All)