Changed it to 'free-domains'

Author: harys722

subdomains.json

@@ -74,5 +74,5 @@
     "wsv": "45.137.70.53",
     "yigit": "mryton.vercel.app",
     "zethsu": "zethsu.vercel.app",
-    "free": "harys722.github.io"
+    "free-domains": "harys722.github.io"
 }