Update articles/ai-services/content-understanding/tutorial/build-person-directory.md

Co-authored-by: Patrick Farley <[email protected]>

Author: kbrowne8

articles/ai-services/content-understanding/tutorial/build-person-directory.md

@@ -162,7 +162,7 @@ After creating your person directory and adding face images with optional person
 
 These capabilities enable robust face recognition and similarity matching for various applications.
 
-:::image type="content" source="../media/face/person-directory-search.png" alt-text="Diagram illustrating the processes of search in a person directory.":::
+:::image type="content" source="../media/face/person-directory-search.png" lightbox="../media/face/person-directory-search.png" alt-text="Diagram illustrating the processes of search in a person directory.":::
 
 ### Identify a person