docs(references): regenerate flow reference for the map node type

Follow-up to #1709 — `map` was added to the FlowNodeAction enum; this
regenerates content/docs/references/automation/flow.mdx (generated from the
Zod descriptions) so the published node-type list includes it.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Author: os-zhuang

content/docs/references/automation/flow.mdx

@@ -80,6 +80,7 @@ const result = FlowNode.parse(data);
 * `screen`
 * `wait`
 * `subflow`
+* `map`
 * `connector_action`
 * `parallel_gateway`
 * `join_gateway`