Ninja → cutter. (#18)

Follows
UCL-ARC/python-tooling#186 and
UCL-ARC/python-tooling#209

python/README.md

@@ -4,4 +4,4 @@ Python code should, as a minimum, adhere to the [PEP8](http://legacy.python.org/
 We also encourage compliance with modern style recommendations, such as type annotations in [PEP484](https://peps.python.org/pep-0484/).
 
 * As a minimum we will support the last 42 months of Python releases. This has been adopted by the wider scientific Python community and codified in [Numpy Enhancement Proposal 29](https://numpy.org/neps/nep-0029-deprecation_policy.html). If researchers require specific support for older versions of Python this can be offered.
-* We have [separate web pages to document our Python recommendations](https://ucl-arc.github.io/python-tooling/) and we maintain an [ARC-recommended `cookieninja` template](https://github.com/UCL-ARC/python-tooling), which might be a helpful starting point.
+* We have [separate web pages to document our Python recommendations](https://ucl-arc.github.io/python-tooling/) and we maintain an [ARC-recommended `cookiecutter` template](https://github.com/UCL-ARC/python-tooling), which might be a helpful starting point.