DiscourseのデフォルトのSVGアイコンをテーマ内のカスタムアイコンに置き換える

[Don]

I’d hide it with CSS and add a new button for it.

Common / CSS

.sidebar-section-wrapper {
  li[data-list-item-name=docs] {
    display: none !important;
  }
}

Add a new button in More > Customize this section