fix(site): update modoo selection page url

Author: 5oran9

lib/site.ts

@@ -4,6 +4,6 @@ export const SITE = {
   url: "https://firstfluke.com",
   threadsHandle: "mega_fluke",
   contactEmail: "our.first.fluke@gmail.com",
-  selectionPageUrl: "https://www.modoo.or.kr/ai-solution",
+  selectionPageUrl: "https://www.modoo.or.kr/ai-solution/organization/841",
   selectionLabel: "모두의 창업 2026 선정",
 } as const;