* update work with different backend section
* fix some warnings
* Update backend.rst
* Update index.rst
Co-authored-by: VoVAllen <VoVAllen@users.noreply.github.com>
Can you add a link for the download to this sentence: You can also `download <location?>` and run the different code examples...
As with other tutorial topics, it would be helpful to add your assumptions or information in the opening section about prerequisites.
Minjie Wang