Fix code smells

ofx_processor/main.py

@@ -9,7 +9,8 @@ CONTEXT_SETTINGS = dict(help_option_names=["-h", "--help"])
 @click.group(context_settings=CONTEXT_SETTINGS)
 @click.version_option()
 def cli():
-    pass
+    pass  # This function acts only as a group to collect other subcommands
+    # As such, it intentionally has no body
 
 
 cli.add_command(ynab.config, name="config")

ofx_processor/utils/ynab.py

@@ -29,7 +29,8 @@ def get_config_file_name():
 
 @click.group()
 def config():
-    pass
+    pass  # This function acts only as a group to collect other subcommands
+    # As such, it intentionally has no body
 
 
 @click.command()