Add Fountainhead validator info (#610)

Co-authored-by: John Marcou <[email protected]>

Author: XingqiWang

testnet/037a09dc0f95fd9fcd383b5e41f60704940675d4e06bb10329858309c6bd5eeeea.json

@@ -1,10 +1,10 @@
 {
   "id": 50,
-  "name": "037a09dc0f95fd9fcd383b5e41f60704940675d4e06bb10329858309c6bd5eeeea",
+  "name": "Fountainhead",
   "secp": "037a09dc0f95fd9fcd383b5e41f60704940675d4e06bb10329858309c6bd5eeeea",
   "bls": "8a3efd334883f07ef1a92b5cca7732a6536cc08ec3c42ad7cb8d1f5035210da30cfac7f05144d2943534f7342e04cb22",
-  "website": "",
-  "description": "",
-  "logo": "",
-  "x": ""
-}
+  "website": "https://fountainhead.network",
+  "description": "Accelerating the future: Decentralized, low-latency and high-performance.",
+  "logo": "https://pbs.twimg.com/profile_images/1901618986070011905/F6Ix-Mbc_400x400.jpg",
+  "x": "https://x.com/Fountainhead_zh"
+}