Fix Kysely watch query (#147)

Author: HeinrichvonStein

client-sdk-references/javascript-web/javascript-orm/kysely.mdx

@@ -143,7 +143,7 @@ For watched queries with Kysely it's recommended to use the `watch()` function f
 
 <CodeGroup>
   ```js Kysely
-  const query = db.selectFrom('users').select();
+  const query = db.selectFrom('users').selectAll();
 
   db.watch(query, {
     onResult(results) {