fix(cph): correct nested outline hierarchy

render/lib.typ

@@ -248,17 +248,8 @@
 /// note rendered as a visually distinct teaching-tip box.
 #let _render-outline-node(node, level) = {
   let title = node.at("title", default: "")
-  let kind = node.at("kind", default: "")
   heading(level: level)[#title]
 
-  if kind != "" {
-    block(
-      inset: (x: 0.35em, y: 0.1em),
-      fill: gray.lighten(80%),
-      radius: 0.2em,
-      text(size: 9pt, fill: gray.darken(30%))[#kind],
-    )
-  }
 
   let notes = node.at("notes", default: none)
   if notes != none and notes != "" {