[Az.RecoveryServices] Typo in RecoveryServices/RecoveryServices.SiteRecovery/Models/PSObjects.cs

### Description
Thanks @anwather for catching this bug.

Properties name "ResourceType" is misspelled:
https://github.com/Azure/azure-powershell/blob/main/src/RecoveryServices/RecoveryServices.SiteRecovery/Models/PSObjects.cs#L75

Please plan to fix it in next major release.

### Issue script & Debug output

```PowerShell
N/A
```

### Environment data

```PowerShell
N/A
```

### Module versions

```PowerShell
N/A
```

### Error output

_No response_

Read src/RecoveryServices/RecoveryServices.SiteRecovery/Models/PSObjects.cs around line 75 and inspect the ResourceType property and nearby naming. Confirm the intended spelling from the surrounding model/API conventions; done means the misspelled property is corrected in the next major release.

Written by the indexing model from the issue text.