Fix Lint Error

- add docstring to traverseConfig function

Author: danwelch3

meshtastic/__main__.py

@@ -135,6 +135,7 @@ def splitCompoundName(comp_name):
     return name
 
 def traverseConfig(config_root, config, interface_config):
+    """Iterate through current config level preferences and either traverse deeper if preference is a dict or set preference"""
     snake_name = meshtastic.util.camel_to_snake(config_root)
     for pref in config:
         pref_name = f"{snake_name}.{pref}"