Hi @Fabio Carello ,
Welcome to Microsoft Q&A forum and thanks for your query.
Unfortunately R support within Synapse Spark is currently not available.
Here is a feature request suggestion shared by an Azure Synapse User : https://feedback.azure.com/d365community/idea/e3fc527d-0b25-ec11-b6e6-000d3a4f07b8
I would recommend you to please upvote and/or comment on the above feature request suggestion as it would help to increase the priority of feature implementation.
Also could you please share the MS document link that shows the above image you shared, so that I can work with internal team to update the image appropriately.
Hope this information helps.
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Thank you
Please do consider to click on "Accept Answer" and "Upvote" on the post that helps you, as it can be beneficial to other community members.