fix black.yml

templates/python/code_quality/black/black.yml

+include:
+  - remote: 'https://api.r2devops.io/job/r/gitlab/dorianturba/r2devops_catalog/python_install@latest.yaml'
+
 black:
     image: python:${IMAGE_TAG}
     stage: code_quality
@@ -10,6 +13,6 @@ black:
         - black ${PROJECT_PATH} --check --diff --quiet
     only:
         changes:
-            - ./**/*.py
+            - ${PROJECT_PATH}/**/*.py
             - .gitlab-ci.yml
-            - pyproject.toml
+            - ${PROJECT_PATH}/pyproject.toml