Add TXT verification for mxd.is-a.dev (github-pages-challenge-yugdabgar21)

domains/_github-pages-challenge-yugdabgar21.mxd.json

@@ -0,0 +1,9 @@
+{
+  "owner": {
+    "username": "yugdabgar21",
+    "email": "yugdabgar21@gmail.com"
+  },
+  "records": {
+    "TXT": "7b4328603acc5801d5dc99c2565920"
+  }
+}