Add Tokyo 2025 summit hero image to header and top of report

Co-authored-by: yuhattor <15963767+yuhattor@users.noreply.github.com>

Author: Copilot

landing-page/content/en/reports/images/tokyo-2025-hero.png

@@ -4,7 +4,7 @@ date: 2025-09-12T13:00:00+09:00
 summary: "The InnerSource Gathering Tokyo 2025 concluded successfully on September 12, 2025. The event brought together professionals and enthusiasts to explore the secrets of cross-organizational collaboration in software development."
 draft: false
 type: "blog"
-bg_image: "/reports/images/tokyo-2025-report.jpeg"
+bg_image: "/reports/images/tokyo-2025-hero.png"
 ---
 
 <br />
@@ -13,7 +13,7 @@ bg_image: "/reports/images/tokyo-2025-report.jpeg"
 
 The InnerSource Gathering Tokyo 2025 concluded successfully on September 12, 2025. The event brought together professionals and enthusiasts to explore the secrets of cross-organizational collaboration in software development. It was a wonderful showcase of the continued growth and enthusiasm of the InnerSource community in Japan.
 
-<img src="/reports/images/tokyo-2025-report.jpeg" width="100%">
+<img src="/reports/images/tokyo-2025-hero.png" width="100%">
 
 <br />