how to prettyfy html markup in vs code code example

Example 1: vscode auto format html

Format entire file: 
Ctrl + Shift + I

Example 2: vs code enable "html" in "javascript"

"emmet.includeLanguages": {
    "javascript": "javascriptreact",
    "vue-html": "html",
    "razor": "html",
    "plaintext": "pug"
}