Update Parameter Name to work with filter

docs/Get-ZertoEvent.md

@@ -19,7 +19,7 @@ Get-ZertoEvent [<CommonParameters>]
 
 ### filter
 ```
-Get-ZertoEvent [-startDate <String>] [-endDate <String>] [-vpg <String>] [-vpgIdentifier <String>]
+Get-ZertoEvent [-startDate <String>] [-endDate <String>] [-vpgName <String>] [-vpgIdentifier <String>]
  [-eventType <String>] [-siteName <String>] [-siteIdentifier <String>] [-zorgIdentifier <String>]
  [-entityType <String>] [-userName <String>] [-category <String>] [-eventCategory <String>]
  [-alertIdentifier <String>] [<CommonParameters>]
@@ -292,13 +292,13 @@ Accept pipeline input: False
 Accept wildcard characters: False
 ```
 
-### -vpg
-The name of the VPG for which you want to return events.
+### -vpgIdentifier
+The identifier of the VPG for which you want to return events.
 
 ```yaml
 Type: String
 Parameter Sets: filter
-Aliases: vpgName
+Aliases: vpgId
 
 Required: False
 Position: Named
@@ -307,13 +307,13 @@ Accept pipeline input: False
 Accept wildcard characters: False
 ```
 
-### -vpgIdentifier
-The identifier of the VPG for which you want to return events.
+### -vpgName
+The name of the VPG for which you want to return events.
 
 ```yaml
 Type: String
 Parameter Sets: filter
-Aliases: vpgId
+Aliases: vpg
 
 Required: False
 Position: Named