Add sharing image

Author: mattstratton

content/events/2025-chicago/program/keith-willoughby.md

@@ -5,4 +5,5 @@ Talk_end_time = ""
 Title = "Confessions of an Incident Manager: Tales from the Trenches"
 Type = "talk"
 Speakers = ["keith-willoughby"]
+sharing_image = "keith-willoughby.png"
 +++