message: docs(website): fix code block line highlight CSS
diff: --grey: #aaaaaa;
  --grey2: #ededed;
  --grey3: #545454;
  +
  + --docusaurus-highlighted-code-line-bg: rgba(0, 0, 0, 0.1);
  }
  :root[data-theme='dark'] {
  --grey: #aaaaaa;
  --grey2: #545454;
  --grey3: #ededed;
  +
  + --docusaurus-highlighted-code-line-bg: rgba(0, 0, 0, 0.3);
  }
  .header-github-link:hover {
  @@ -70,14 +74,3 @@ html[data-theme='dark'] .footer--dark {
  .footer--dark .text--center {
  color: var(--grey);
  }
  -
  -.docusaurus-highlight-code-line {
  - background-color: rgba(0, 0, 0, 0.1);
  - display: block;
  - margin: 0 calc(-1 * var(--ifm-pre-padding));
  - padding: 0 var(--ifm-pre-padding);
  -}
  -
  -html[data-theme='dark'] .docusaurus-highlight-code-line {
  - background-color: rgba(0, 0, 0, 0.3);
  -}
  