fix: traffic widget walidation error caused my improper indentation

[aleckslu]

Pull Request #113

Description

When you first run the script with python src/main.py, you get an error:

The config file 'C:\Users\me\.yasb\config.yaml' contains validation errors. Please fix:
widgets:
- traffic:
  - null value not allowed

This is caused by two missing indents for the traffic object in config.yaml.

Also removed extra indents in the wifi config to keep its formatting consistent with the rest of the config.

Related Issue

#113

Testing

run python src/main.py and it runs without issue :)