test readthedocs formatter

docs/users/index.md

@@ -26,6 +26,13 @@ jupyter labextension list
 and checking that both the `jupyter_scheduler` server extension and the
 `@jupyterlab/scheduler` prebuilt lab extension are enabled.
 
+:::{attention}
+:name: open-ai-cost
+Model providers may charge users for API usage. Jupyter AI users are
+responsible for all charges they incur when they make API requests. Review your model
+provider's pricing information before submitting requests via Jupyter AI.
+:::
+
 :::{attention}
 :name: jupyter-lab-3-end-of-maintenance
 JupyterLab 3 will reach its end of maintenance date on May 15, 2024, anywhere on Earth. As a result, we will not backport new features to the v1 branch supporting JupyterLab 3 after this date. Fixes for critical issues will still be backported until December 31, 2024. If you are still using JupyterLab 3, we strongly encourage you to **upgrade to JupyterLab 4 as soon as possible**. For more information, see [JupyterLab 3 end of maintenance](https://blog.jupyter.org/jupyterlab-3-end-of-maintenance-879778927db2) on the Jupyter Blog.