working vscode rails

gistfile1.txt

{
    "files.autoSave": "off",
    "window.titleBarStyle": "custom",
    "window.menuBarVisibility": "classic",
    "[dart]": {
        "editor.formatOnSave": true,
        "editor.formatOnType": true,
        "editor.rulers": [
            80
        ],
        "editor.selectionHighlight": false,
        "editor.suggest.snippetsPreventQuickSuggestions": false,
        "editor.suggestSelection": "first",
        "editor.tabCompletion": "onlySnippets",
        "editor.wordBasedSuggestions": false
    },
    "workbench.iconTheme": "material-icon-theme",
    "[html]": {
        "editor.defaultFormatter": "vscode.html-language-features"
    },
    "editor.tabSize": 2,
    "explorer.confirmDelete": false,
    "workbench.startupEditor": "newUntitledFile",
    "[erb]": {
        "editor.defaultFormatter": "aliariff.vscode-erb-beautify"
    },
    "editor.formatOnSave": true,
    "explorer.confirmDragAndDrop": false,
    "files.associations": {
        "*.erb": "erb"
    }
}

just install htmlbeautifier