docs: small docs sweep consistency updates (#22531)

* docs: fix thinking link and add reasoning anchor reference

* docs(channels): rename LINE setup heading to onboarding

* docs(channels): normalize Nextcloud Talk onboarding headings

* docs(channels): use onboarding heading for Matrix setup

docs/channels/line.md

@@ -31,7 +31,7 @@ Local checkout (when running from a git repo):
 openclaw plugins install ./extensions/line
 ```
 
-## Setup
+## Onboarding
 
 1. Create a LINE Developers account and open the Console:
    [https://developers.line.biz/console/](https://developers.line.biz/console/)
@@ -48,7 +48,7 @@ The gateway responds to LINE’s webhook verification (GET) and inbound events (
 If you need a custom path, set `channels.line.webhookPath` or
 `channels.line.accounts.<id>.webhookPath` and update the URL accordingly.
 
-## Configure
+## Configuration
 
 Minimal config:
 

docs/channels/matrix.md

@@ -36,7 +36,7 @@ OpenClaw will offer the local install path automatically.
 
 Details: [Plugins](/tools/plugin)
 
-## Setup
+## Onboarding
 
 1. Install the Matrix plugin:
    - From npm: `openclaw plugins install @openclaw/matrix`

docs/channels/nextcloud-talk.md

@@ -30,7 +30,7 @@ OpenClaw will offer the local install path automatically.
 
 Details: [Plugins](/tools/plugin)
 
-## Quick setup (beginner)
+## Onboarding
 
 1. Install the Nextcloud Talk plugin.
 2. On your Nextcloud server, create a bot:
@@ -106,7 +106,7 @@ Minimal config:
 | Reactions       | Supported     |
 | Native commands | Not supported |
 
-## Configuration reference (Nextcloud Talk)
+## Configuration
 
 Full configuration: [Configuration](/gateway/configuration)
 

docs/tools/thinking.md

@@ -61,6 +61,7 @@ title: "Thinking Levels"
 ## Related
 
 - Elevated mode docs live in [Elevated mode](/tools/elevated).
+- Reasoning visibility behavior is documented in [Reasoning visibility](/tools/thinking#reasoning-visibility-reasoning).
 
 ## Heartbeats