update readme banner image

Signed-off-by: Jonny Galloway <[email protected]>

README.md

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 # O3DE Loft ArchVis Sample Scene
 
-![image](https://user-images.githubusercontent.com/23222931/187786108-fec21285-5c78-4e93-88ae-51e74eb4ffdb.png)
+![image](https://user-images.githubusercontent.com/23222931/197286449-77ecd592-464c-49b1-88d0-487e2546b5ab.png)
 
 ## Download and Install