One correction and one request

Correction:
Corrected description under -Mailbox
Request:
Please add a table that describes what exactly each permission group does; i.e. what does it mean if an user has author access right to a public folder?

Author: Batre-MSFT

exchange/exchange-ps/exchange/sharing-and-collaboration/Get-PublicFolderClientPermission.md

@@ -111,7 +111,7 @@ Accept wildcard characters: False
 ```
 
 ### -Mailbox
-The Mailbox parameter specifies the identity of the public folder mailbox for which you want to view the permissions. By default, the permissions are returned for the primary public folder mailbox. Using the Mailbox parameter allows you to specify a different public folder mailbox.
+The Mailbox parameter specifies the identity of the public folder mailbox from which you want to view the permissions. By default, the permissions are returned from the primary public folder mailbox. Using the Mailbox parameter allows you to specify a different public folder mailbox.
 
 ```yaml
 Type: MailboxIdParameter