docs: normalize frontmatter titles to sentence case

docs/install/bun.md

@@ -3,7 +3,7 @@ summary: "Bun workflow (experimental): installs and gotchas vs pnpm"
 read_when:
   - You want the fastest local dev loop (bun + watch)
   - You hit Bun install/patch/lifecycle script issues
-title: "Bun (Experimental)"
+title: "Bun (experimental)"
 ---
 
 <Warning>

docs/install/development-channels.md

@@ -4,7 +4,7 @@ read_when:
   - You want to switch between stable/beta/dev
   - You want to pin a specific version, tag, or SHA
   - You are tagging or publishing prereleases
-title: "Release Channels"
+title: "Release channels"
 sidebarTitle: "Release Channels"
 ---
 

docs/install/docker-vm-runtime.md

@@ -3,7 +3,7 @@ summary: "Shared Docker VM runtime steps for long-lived OpenClaw Gateway hosts"
 read_when:
   - You are deploying OpenClaw on a cloud VM with Docker
   - You need the shared binary bake, persistence, and update flow
-title: "Docker VM Runtime"
+title: "Docker VM runtime"
 ---
 
 Shared runtime steps for VM-based Docker installs such as GCP, Hetzner, and similar VPS providers.

docs/install/installer.md

@@ -4,7 +4,7 @@ read_when:
   - You want to understand `openclaw.ai/install.sh`
   - You want to automate installs (CI / headless)
   - You want to install from a GitHub checkout
-title: "Installer Internals"
+title: "Installer internals"
 ---
 
 OpenClaw ships three installer scripts, served from `openclaw.ai`.

docs/install/migrating.md

@@ -3,7 +3,7 @@ summary: "Move (migrate) an OpenClaw install from one machine to another"
 read_when:
   - You are moving OpenClaw to a new laptop/server
   - You want to preserve sessions, auth, and channel logins (WhatsApp, etc.)
-title: "Migration Guide"
+title: "Migration guide"
 ---
 
 # Migrating OpenClaw to a New Machine