Hi @keroman
Thanks for reporting it. I will update this document with the new screenshot.
In the meanwhile, you can navigate to "Management API" under the "Development and infrastructure" option and then select "Yes" for the Enable Management REST API option.
Update: Direct Management API is not supported in Consumption SKU. I can see that your APIM resource was created under the SKU ‘Consumption’. You need to create the APIM in any other SKU apart from Consumption SKU
Please 'Accept as answer' and ‘Upvote’ if it helped so that it can help others in the community looking for help on similar topics.