add recommendation for setting NAME setting in the docs

[m000]

Without explicitly setting the NAME, the template engine will be called backend, which is counter-intuitive.

[wizpig64]

Thanks for catching this and nailing it down in the docs!

I'm planning on getting a release out later this month with the regular metadata bumps; expect this change to be included.

Fixing the default NAME by changing the import path might be worth doing if we get around to introducing any necessary breaking changes.

[m000]

Thanks for the fast merge. Hope it will save people some time.

Perhaps an interim solution to have a more meaningful automatic name would be:

• Move contents of backend.py in a new module.
• Import in backend.py whatever is necessary from the new module.
• Emit a deprecation warning whenever backend.py is imported from user code, so it can eventually be removed.