fixed some image issues and added clarification to README

content/articles/zargham-ultimate_frisbee.md

@@ -6,7 +6,7 @@ date: 2024-11-04
 approved: 2024-12-02
 summary: "As a sport often played with no referees, ultimate frisbee has developed a strong set of norms for addressing conflict and self-governing."
 location: "East Greenbush, NY USA"
-headshot: "michael-zargham.png"
+headshot: "michael_zargham.png"
 topics: [frisbee, sports, organizations, dispute resolution]
 ---