docs: remove H1 on pages where frontmatter + summary already cover the parenthetical

docs/nodes/camera.md

@@ -6,8 +6,6 @@ read_when:
 title: "Camera capture"
 ---
 
-# Camera capture (agent)
-
 OpenClaw supports **camera capture** for agent workflows:
 
 - **iOS node** (paired via Gateway): capture a **photo** (`jpg`) or **short video clip** (`mp4`, with optional audio) via `node.invoke`.

docs/nodes/location-command.md

@@ -6,8 +6,6 @@ read_when:
 title: "Location command"
 ---
 
-# Location command (nodes)
-
 ## TL;DR
 
 - `location.get` is a node command (via `node.invoke`).

docs/nodes/voicewake.md

@@ -6,8 +6,6 @@ read_when:
 title: "Voice wake"
 ---
 
-# Voice Wake (Global Wake Words)
-
 OpenClaw treats **wake words as a single global list** owned by the **Gateway**.
 
 - There are **no per-node custom wake words**.