Replace process flow image with new version

Updated the process flow diagram image in the documentation.

Author: rrillig

src/api-reference/cards/v4.cards-get-started-new.markdown

@@ -31,7 +31,7 @@ Write API limitations:
 
 ## <a name="process-flow"></a>Process Flow
 
-![CardsV4ProcessFlow](./v4.cards-get-started-process-flow.png)
+![CardsV4ProcessFlow](./v4.cards-get-started-process-flow-new.png)
 
 ## <a name="products-editions"></a>Products and Editions