updated README and documentation (first part) to match 0.6

docs/integration/cloudflare.mdx

@@ -31,7 +31,7 @@ export default serve({
    })
 });
 ```
-For more information about the connection object, refer to the [Setup](/setup/introduction) guide.
+For more information about the connection object, refer to the [Database](/usage/database) guide.
 
 Now run the worker:
 ```bash