fix: correct subdomain name and file structure

domains/santiago.is-a.dev.json

@@ -1,11 +0,0 @@
-{
-    "description": "Portafolio personal",
-    "repo": "https://github.com/smpineda129/portfolio",
-    "owner": {
-      "username": "smpineda129",
-      "email": "smpineda129@gmail.com"
-    },
-    "record": {
-      "CNAME": "smpineda129.github.io"
-    }
-  }

domains/santiago.json

@@ -0,0 +1,11 @@
+{
+  "description": "Portafolio personal",
+  "repo": "https://github.com/smpineda129/portfolio",
+  "owner": {
+    "username": "smpineda129",
+    "email": "smpineda129@gmail.com"
+  },
+  "record": {
+    "CNAME": "smpineda129.github.io"
+  }
+}