message: docs: adopt changes on less-loader v6.0.0
diff: @@ -71,6 +71,7 @@ module.exports = {
  {
  loader: 'less-loader',
  options: {
  + lessOptions: {
  modifyVars: {
  // overide with less vars
  'text-color': '#111',
  @@ -78,6 +79,7 @@ module.exports = {
  // or override with less file
  'hack': `true; @import "your-less-file-path.less";`
  },
  + }
  },
  },
  ],
  @@ -94,6 +96,7 @@ module.exports = {
  css: {
  loaderOptions: {
  less: {
  + lessOptions: {
  modifyVars: {
  // overide with less vars
  'text-color': '#111',
  @@ -104,5 +107,6 @@ module.exports = {
  },
  },
  },
  + },
  };
  ```
  