Fix username format and update CNAME URL in domain configurations

domains/kevalkankrecha.json

@@ -1,6 +1,6 @@
 {
   "owner": {
-    "username": "kevalkankrecha",
+    "username": "keval-kankrecha",
     "email": "kkj63609@gmail.com"
   },
   "records": {

domains/www.kevalkankrecha.json

@@ -4,6 +4,6 @@
     "email": "kkj63609@gmail.com"
   },
   "records": {
-    "CNAME": "https://kevalkankrecha.netlify.app"
+    "CNAME": "kevalkankrecha.netlify.app"
   }
 }