Remove old domain and rename subdomain file

Deleted the _github-pages-challenge-lowqualityloey domain file and renamed the subdomain JSON file to _github-pages-challenge-lowqualityloey.jonell.json for improved clarity and organization.

domains/_github-pages-challenge-lowqualityloey

@@ -1,9 +0,0 @@
-{
-    "owner": {
-        "username": "lowqualityloey",
-        "email": "[itsjonellmb@gmail.com]"
-    },
-    "records": {
-        "TXT": "6fa13c14ab8c5d064835dbcb3e2ad4"
-    }
-}