fixed missing cmdlet example

Author: Sean Wheeler

azureps-cmdlets-docs/ResourceManager/docs-conceptual/queries-azureps.md

@@ -89,6 +89,10 @@ RGDEMO001          KBDemo020
 
 With the next example, the results will return the VMs that have the vmSize 'Standard_DS1_V2'.
 
+```powershell
+Get-AzureRmVM | Where-Object vmSize -eq "'Standard_DS1_V2'" | Select-Object ResourceGroupName,Name
+```
+
 ```
 ResourceGroupName          Name     Location          VmSize  OsType              NIC ProvisioningState
 -----------------          ----     --------          ------  ------              --- -----------------