message: fix(theme): fix code block lang issue
diff: @@ -197,14 +197,6 @@ div[class*="language-"] {
  }
  }
  -@each $lang in hope-config.$code-lang {
  - div[class*="language-"].ext-#{$lang} {
  - &::before {
  - content: "" + $lang;
  - }
  - }
  -}
  -
  // narrow mobile
  @media (max-width: hope-config.$mobile) {
  #{hope-config.$content-class} {
  