diff -r db4911b0c721 -r 445e01aede7e vendor/github.com/russross/blackfriday/v2/node.go
--- a/vendor/github.com/russross/blackfriday/v2/node.go	Tue Aug 23 22:33:28 2022 +0200
+++ b/vendor/github.com/russross/blackfriday/v2/node.go	Tue Aug 23 22:39:43 2022 +0200
@@ -199,7 +199,8 @@
 	}
 }
 
-func (n *Node) isContainer() bool {
+// IsContainer returns true if 'n' can contain children.
+func (n *Node) IsContainer() bool {
 	switch n.Type {
 	case Document:
 		fallthrough
@@ -238,6 +239,11 @@
 	}
 }
 
+// IsLeaf returns true if 'n' is a leaf node.
+func (n *Node) IsLeaf() bool {
+	return !n.IsContainer()
+}
+
 func (n *Node) canContain(t NodeType) bool {
 	if n.Type == List {
 		return t == Item
@@ -309,11 +315,11 @@
 }
 
 func (nw *nodeWalker) next() {
-	if (!nw.current.isContainer() || !nw.entering) && nw.current == nw.root {
+	if (!nw.current.IsContainer() || !nw.entering) && nw.current == nw.root {
 		nw.current = nil
 		return
 	}
-	if nw.entering && nw.current.isContainer() {
+	if nw.entering && nw.current.IsContainer() {
 		if nw.current.FirstChild != nil {
 			nw.current = nw.current.FirstChild
 			nw.entering = true