fix: add comment about return value

components/JsonToHtml/utils.tsx

@@ -21,12 +21,14 @@ export function groupEmbedsByUid(embedsArray: Node<Embeds>[]) {
   return embedsByUid
 }
 
+
 export function nodeChildrenToHtml(
   nodes: RTENode[],
   embeds: EmbedByUid,
   fullRenderOptions: RenderOptions
 ): any {
   return nodes.map((node, i) => {
+    // This function either returns a JSX element or null
     return {
       ...nodeToHtml(node, embeds, fullRenderOptions),
       key: `child-rte-${i}`,