It’s the same procedure as the common way, you will get the upgrade for your spin Cinnamon, because the appropriate packages of Cinnamon will be recognized and will be brought to the next higher version, if available. Follow the instructions and it will work. I have done the same some years ago for the KDE(Plasma)-spin without any issues. Before upgrading make sure that your current version 35 works without any issues, otherwise it’s possible that the upgraded system will crash. I hope it helps you.
Thank you for answering brother. Yes indeed, I make sure everything is up-to-date, freshly booted, dnf updated, clean all (etc), and otherwise working well before starting the upgrade procedure. Thank you for the detailed response, and for sharing your experience.
Unfortunately the description what a spin is, appears almost on the bottom of the website:
What are Spins?
The default desktop environment of Fedora is GNOME, but if you prefer an alternative desktop environment such as KDE Plasma Desktop or Xfce, you can download a spin for your preferred desktop environment and use that to install Fedora, pre-configured for the desktop environment of your choice.
Just to clarify, Fedora names a DE=Desktop Environment a Spin. To distinguish the default Spin from the other ones, we use the alias “Workstation”.