Merge pull request MicrosoftDocs#2245 from tseward/patch-14

Update Get-SPOHubSite.md

Author: kenwith

sharepoint/sharepoint-ps/sharepoint-online/Get-SPOHubSite.md

@@ -22,6 +22,8 @@ Lists all hub sites found on the SharePoint tenant. If you provide **-Identity**
 
 If the hub site doesn’t exist, this cmdlet returns a “File not found” error.
 
+> [!NOTE] If a deleted hub site appears in the output of this cmdlet you may not have run [Unregister-SPOHubSite](https://docs.microsoft.com/en-us/powershell/module/sharepoint-online/unregister-spohubsite) on the deleted hub site.
+
 ## EXAMPLES
 
 ### Example 1