fix: broken link in Verified leaderboard table (#41)

* Fix: Remove broken GitHub link for TRAE + Doubao-Seed-Code

The GitHub repository link (https://github.com/bytedance/trae-agent)
returns a 404 error. Removed it from the site array, keeping only the
working seed.bytedance.com link.

* Update site URL in leaderboards.json

Author: Chesars

data/leaderboards.json

@@ -43683,8 +43683,7 @@
             "https://se-research.bytedance.com/logos/bytedance.jpg"
           ],
           "site": [
-            "https://github.com/bytedance/trae-agent",
-            "https://seed.bytedance.com/"
+            "https://github.com/bytedance/trae-agent"
           ],
           "folder": "20250928_trae_doubao_seed_code",
           "resolved": 78.8,
@@ -92456,4 +92455,4 @@
       ]
     }
   ]
-}
+}