fix URL of Nix CI shield

Author: palmskog

README.md.mustache

@@ -40,8 +40,8 @@ Follow the instructions on https://github.com/coq-community/templates to regener
 [docker-action-link]: https://github.com/{{ organization }}/{{ shortname }}/actions/workflows/docker-action.yml
 {{# nix }}
 
-[nix-action-shield]: https://github.com/{{ organization }}/{{ shortname }}/actions/workflows/nix-ci.yml/badge.svg?branch={{branch}}{{^branch}}master{{/branch}}
-[nix-action-link]: https://github.com/{{ organization }}/{{ shortname }}/actions/workflows/nix-ci.yml
+[nix-action-shield]: https://github.com/{{ organization }}/{{ shortname }}/actions/workflows/nix-action.yml/badge.svg?branch={{branch}}{{^branch}}master{{/branch}}
+[nix-action-link]: https://github.com/{{ organization }}/{{ shortname }}/actions/workflows/nix-action.yml
 {{/ nix }}
 {{/ action }}
 {{# chat }}