Update / fix README template (#356)

Author: le-ander

{{cookiecutter.project_name}}/README.md

@@ -16,7 +16,7 @@ in particular, the [API documentation][].
 ## Installation
 
 You need to have Python 3.10 or newer installed on your system.
-If you don't have Python installed, we recommend installing [Mambaforge][].
+If you don't have Python installed, we recommend installing [uv][].
 
 There are several alternative options to install {{ cookiecutter.project_name }}:
 
@@ -47,10 +47,10 @@ If you found a bug, please use the [issue tracker][].
 
 > t.b.a
 
-[mambaforge]: https://github.com/conda-forge/miniforge#mambaforge
+[uv]: https://github.com/astral-sh/uv
 [scverse discourse]: https://discourse.scverse.org/
 [issue tracker]: https://github.com/{{ cookiecutter.github_user }}/{{ cookiecutter.project_name }}/issues
-[tests]: https://github.com/{{ cookiecutter.github_user }}/{{ cookiecutter.github_repo }}/actions/workflows/test.yml
+[tests]: https://github.com/{{ cookiecutter.github_user }}/{{ cookiecutter.github_repo }}/actions/workflows/test.yaml
 [documentation]: https://{{ cookiecutter.project_name }}.readthedocs.io
 [changelog]: https://{{ cookiecutter.project_name }}.readthedocs.io/en/latest/changelog.html
 [api documentation]: https://{{ cookiecutter.project_name }}.readthedocs.io/en/latest/api.html