Update thanhhuynh.is-a.dev + register thanhhd.is-a.dev (point to Back4app portfolio)

domains/thanhhd.json

@@ -0,0 +1,9 @@
+{
+    "owner": {
+        "username": "thanhdicode",
+        "email": "ThanhHDSE184021@fpt.edu.vn"
+    },
+    "records": {
+        "CNAME": "thanhhuynhportfolio-nxr3ytcd.b4a.run"
+    }
+}

domains/thanhhuynh.json

@@ -4,6 +4,6 @@
         "email": "ThanhHDSE184021@fpt.edu.vn"
     },
     "records": {
-        "CNAME": "thanhdicode.github.io"
+        "CNAME": "thanhhuynhportfolio-nxr3ytcd.b4a.run"
     }
 }