Update instructions for running PS1 script

Author: idg-sam

README.md

@@ -72,7 +72,9 @@ If you want to use this automation:
 1. In PowerShell run:
 
    ```PowerShell
-   .\AppCreationScripts\Configure.ps1
+   cd .\AppCreationScripts\
+   .\Configure.ps1
+   cd ..
    ```
 
    > Other ways of running the scripts are described in [App Creation Scripts](./AppCreationScripts/AppCreationScripts.md)