Update CNAME

Author: shreyuh

subdomains.json

@@ -113,5 +113,5 @@
     "zb": "128.204.218.48",
     "zdv3": "45.197.147.243",
     "zethsu": "zethsu.vercel.app",
-    "link": "bio-link-s.vercel.app"
+    "link": "18c622921fd37a70.vercel-dns-017.com"
 }