Clarify why we don't check "py" with isort

It might look like an error that this piece of code doesn't have an `if`
for the `api` type, but it is OK.

Signed-off-by: Leandro Lucarella <[email protected]>

Author: llucax

cookiecutter/{{cookiecutter.github_repo_name}}/pyproject.toml

@@ -104,6 +104,7 @@ include = '\.pyi?$'
 [tool.isort]
 profile = "black"
 line_length = 88
+{#- We don't include "py" here for API because we don't want to check generated files #}
 src_paths = ["src", "examples", "tests"]
 
 [tool.pylint.similarities]