Incorrect example [Example 2: Update Bypass property of NetworkRule]

### Type of issue

Code doesn't work

### Feedback

Hi,
I don't think the code example for Example 2 is correct.
```powershell
Update-AzCognitiveServicesAccountNetworkRuleSet -ResourceGroupName "myResourceGroup" -Name "myaccount"
```

I tried it anyway, and received the following error message:
`Update-AzCognitiveServicesAccountNetworkRuleSet: Request must specify an account NetworkRule property to update. (Parameter 'IpRules, VirtualNetworkRules, DefaultAction')`

### Page URL

https://learn.microsoft.com/en-us/powershell/module/az.cognitiveservices/update-azcognitiveservicesaccountnetworkruleset?view=azps-12.1.0

### Content source URL

https://github.com/Azure/azure-powershell/blob/main/src/CognitiveServices/CognitiveServices/help/Update-AzCognitiveServicesAccountNetworkRuleSet.md

### Author

@mikefrobbins

### Document Id

66984f0b-b5a5-c9ff-af13-e62fb514f072