Resolve "front-matter linter"

Closes #320 (closed)

packages/df-wiki-cli/df_wiki_cli/wiki/main.py

@@ -50,6 +50,7 @@ def lint(
         ),
     ],
 ):
+    print(f"check system {file}")
     with open(file) as f:
         metadata, _ = frontmatter.parse(f.read())
         # print(metadata)