Blocks editing example uses outdated type

[novellac]

Context

A user with a new install of Tina who is following the example code in the docs to implement Blocks editing.

Issue

importing TinaTemplate type gives TypeScript warnings about the type having been deprecated.

Possible fix

On the blocks.md page:

• replace import type { TinaTemplate } from 'tinacms' with import type { Template } from 'tinacms'
• replace subsequent uses of TinaTemplate in the code block with Template

How to test

On a new install of Tina, importing Template should not result in any TypeScript warnings.