Thanks for reaching out to us, could you please share the link or page you are mentioning so that we can fix the document.
For guidance on how to do a regression model using Azure Machine Learning Designer, please take a look on below document about using Designer to train a no-code regression model -
For more guidance about Azure Machine Learning Designer, please check on the document here for a quick reference -
Please feel free to let us know if you need more information, I hope this helps.
-Please kindly accept the answer if you feel helpful to support the community, thanks a lot.