fix(stats-site): correct gitea repo URL bergabruh → bergamot

Source-of-truth gitea repo lives at bergamot/stats-gateway, not
bergabruh/stats-gateway (404). Fixes user-facing dashboard footer
+ about page links.

Note: Go module path 'gitea.projectshitpost.fun/bergabruh/...' is
still wrong but rename touches every import + protobuf — separate
refactor PR.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

stats-site/static/about/index.html

@@ -18,7 +18,7 @@
 
     <p>Цель — мониторить деградации latency/throughput для собственного
     использования. API сервиса описан в
-    <a href="https://gitea.projectshitpost.fun/bergabruh/stats-gateway">stats-gateway</a>.</p>
+    <a href="https://gitea.projectshitpost.fun/bergamot/stats-gateway">stats-gateway</a>.</p>
 
     <p><a href="/">← Назад</a></p>
   </main>