feat: update examples

docs/examples/1.8.x/client-android/java/databases/create-document.md

@@ -12,7 +12,13 @@ databases.createDocument(
     "<DATABASE_ID>", // databaseId 
     "<COLLECTION_ID>", // collectionId 
     "<DOCUMENT_ID>", // documentId 
-    mapOf( "a" to "b" ), // data 
+    mapOf(
+        "username" to "walter.obrien",
+        "email" to "walter.obrien@example.com",
+        "fullName" to "Walter O'Brien",
+        "age" to 30,
+        "isAdmin" to false
+    ), // data 
     listOf("read("any")"), // permissions (optional)
     new CoroutineCallback<>((result, error) -> {
         if (error != null) {