Merge pull request #30418 from slater-uk/main

Edited slater.json for github username change

domains/slater.json

@@ -1,8 +1,8 @@
 {
     "owner": {
-        "username": "adslate"
+        "username": "slater-uk"
     },
     "records": {
-        "CNAME": "adslate.github.io"
+        "CNAME": "slater-uk.github.io"
     }
 }