Update Remove-AzureRmVMDscExtension.md

fixing typo in PowerShell snippet

Author: danielstocker

src/ResourceManager/Compute/Commands.Compute/help/Remove-AzureRmVMDscExtension.md

@@ -24,7 +24,7 @@ The **Remove-AzureRmVMDscExtension** cmdlet removes a Desired State Configuratio
 
 ### Example 1: Remove a DSC extension
 ```
-PS C:\> Remove-AzureRmVMDscExtension -ResouceGroupName "ResourceGroup001" -VMName "VM07" -Name "DSC"
+PS C:\> Remove-AzureRmVMDscExtension -ResourceGroupName "ResourceGroup001" -VMName "VM07" -Name "DSC"
 ```
 
 This command removes the extension named DSC on virtual machine named VM07.