How to add ruler in VSCode ?

settings.json

"[git-commit]": {
    "editor.rulers": [{
         "column": 50,
         "color": "#50e782"    
    },
    {    
          "column":72,
          "color": "#ff7b00"
    }],
    "editor.wordWrap": "on",
    "workbench.editor.restoreViewState": true
}