docs(spec): regenerate the node-executor reference for the configSchema describe change

`content/docs/references/` is generated from the Zod source by
`packages/spec/scripts/build-docs.ts` and gated by `check:docs`. Correcting
`ActionDescriptor.configSchema`'s `.describe()` in the previous commit changed its
generated row, so the checked-in reference went stale.

Regenerated with `gen:schema && gen:docs` — a one-line diff, no other file touched.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01QoA8AV99Ss1RRkLLAYmDzq

Author: claude

content/docs/references/automation/node-executor.mdx

@@ -70,7 +70,7 @@ Canonical cross-paradigm action/node descriptor (ADR-0018)
 | **icon** | `string` | optional | Icon id resolved by the designer |
 | **category** | `Enum<'logic' \| 'data' \| 'io' \| 'human' \| 'control' \| 'custom'>` | ✅ | Palette category |
 | **paradigms** | `Enum<'flow' \| 'approval'>[]` | ✅ | Authoring surfaces that may offer this action |
-| **configSchema** | `any` | optional | JSON Schema for the node config (drives form + parse validation) |
+| **configSchema** | `any` | optional | JSON Schema for the node config (drives the designer form; only declared expression slots are validated) |
 | **supportsPause** | `boolean` | ✅ | Supports async pause/resume |
 | **supportsCancellation** | `boolean` | ✅ | Supports cancellation |
 | **supportsRetry** | `boolean` | ✅ | Supports retry on failure |