Fixes inconsistent slot name in example

The example and description's slot names should match.

Author: cornem

src/ResourceManager/Websites/Commands.Websites/help/Remove-AzureRmWebAppSlot.md

@@ -31,7 +31,7 @@ This cmdlet, by default, also removes all slots and metrics.
 
 ### Example 1: Remove a Web App Slot
 ```
-PS C:\>Remove-AzureRmWebAppSlot -ResourceGroupName "Default-Web-WestUS" -Name "ContosoSite" -Slot "ContosoSlot"
+PS C:\>Remove-AzureRmWebAppSlot -ResourceGroupName "Default-Web-WestUS" -Name "ContosoSite" -Slot "Slot001"
 ```
 
 This command removes the Slot named Slot001 associated with Web App ContosoSite that belongs to the resource group named Default-Web-WestUS.