docs: remove duplicate body H1s + sentence-case headings across 10 pages

docs/plugins/dependency-resolution.md

@@ -8,8 +8,6 @@ title: "Plugin dependency resolution"
 sidebarTitle: "Dependencies"
 ---
 
-# Plugin dependency resolution
-
 OpenClaw keeps plugin dependency work at install/update time. Runtime loading
 does not run package managers, repair dependency trees, or mutate the OpenClaw
 package directory.

docs/plugins/webhooks.md

@@ -6,8 +6,6 @@ read_when:
 title: "Webhooks plugin"
 ---
 
-# Webhooks (plugin)
-
 The Webhooks plugin adds authenticated HTTP routes that bind external
 automation to OpenClaw TaskFlows.
 

docs/plugins/zalouser.md

@@ -6,8 +6,6 @@ read_when:
 title: "Zalo personal plugin"
 ---
 
-# Zalo Personal (plugin)
-
 Zalo Personal support for OpenClaw via a plugin, using native `zca-js` to automate a normal Zalo user account.
 
 <Warning>