How to change file path in html on build?

Question

gulp.js

Plz tell me how to change the style path in the html file?
I'm building a project from the dev folder in build. Inside dev is index.html c during assembly, this path should be replaced by There is a solution to take index.html to the root, but I would like to understand just such a path) gulpfile.js
<link rel="stylesheet" href="less/main.less">
<link rel="stylesheet" href="css/main.css">

const path = require('path');

const { src, dest, parallel, series } = require('gulp');
const clean = require('gulp-clean');
const less = require('gulp-less');
const autoprefixer = require('gulp-autoprefixer');
const changed = require('gulp-changed');
const watch = require('gulp-watch');

const clear = () => {
  return src('./build/css', { read: false }).pipe(clean());
};

const html = () => {
  return src('./dev/*.html').pipe(dest('./build'));
};

const css = () => {
  return src('./dev/less/**/*.less')
    .pipe(changed('./build/css/'))
    .pipe(less())
    .pipe(autoprefixer())
    .pipe(dest('./build/css'));
};

const observe = () => {
  watch('./dev/less/**/*.less', css);
  watch('./dev/*.html', html);
};

exports.default = series(clear, parallel(observe));