fix missing image

Author: didiyordanova

controls/chat/templates/item-template-selector.md

@@ -61,7 +61,7 @@ The following example demonstrates how to create a custom `ChatItemTemplateSelec
 
 The image below shows how the customized Chat control can look:
 
-![A customized .NET MAUI Chat](images/chat-item-template-selector.png)
+![A customized .NET MAUI Chat](../images/chat-item-template-selector.png)
 
 ## See Also