[packit/constants.py] Improve comments in generated .packit.yaml
Fixes
@@ -67,8 +67,9 @@ synced_files:
- {downstream_package_name}.spec
- .packit.yaml
-# change these lines if upstream project name is not the same as downstream
+# name in upstream package repository/registry (e.g. in PyPI)
upstream_project_name: {upstream_project_name}
+# downstream (Fedora) RPM package name
downstream_package_name: {downstream_package_name}
"""
