add: 砧Dojoのロゴ画像を追加

Author: nacchan99

db/dojos.yaml

@@ -1342,7 +1342,7 @@
   created_at: '2025-08-12'
   name: 砧
   prefecture_id: 13
-  logo: "/img/dojos/default.webp"
+  logo: "/img/dojos/kinuta.png"
   url: https://codeclub.org/ja/clubs/4e31fc13-205c-4738-9b62-2722d890f6ed
   description: 世田谷区で毎月開催
   tags: