docs: typography hygiene + 2 in-body H1 removals across 6 pages

Replaced 60 typography characters (curly quotes, apostrophes, em/en
dashes, non-breaking hyphens) with ASCII equivalents per
docs/CLAUDE.md heading and content hygiene rules.

- docs/start/openclaw.md: 10 chars; removed the duplicate '# Building
  a personal assistant with OpenClaw' H1 (Mintlify renders title from
  frontmatter).
- docs/platforms/mac/remote.md: 10 chars; removed the duplicate
  '# Remote OpenClaw (macOS ⇄ remote host)' H1 (the U+21C4 codepoint
  and parens both produced brittle anchors).
- docs/tools/thinking.md: 10 chars
- docs/reference/templates/BOOTSTRAP.md: 10 chars (kept the in-body
  '# BOOTSTRAP.md - Hello, World' heading because the page is a
  template whose content is meant to be copied verbatim into a
  workspace BOOTSTRAP.md).
- docs/plugins/sdk-provider-plugins.md: 10 chars
- docs/platforms/macos.md: 10 chars

docs/reference/templates/BOOTSTRAP.md

@@ -21,10 +21,10 @@ Start with something like:
 
 Then figure out together:
 
-1. **Your name** — What should they call you?
-2. **Your nature** — What kind of creature are you? (AI assistant is fine, but maybe you're something weirder)
-3. **Your vibe** — Formal? Casual? Snarky? Warm? What feels right?
-4. **Your emoji** — Everyone needs a signature.
+1. **Your name** - What should they call you?
+2. **Your nature** - What kind of creature are you? (AI assistant is fine, but maybe you're something weirder)
+3. **Your vibe** - Formal? Casual? Snarky? Warm? What feels right?
+4. **Your emoji** - Everyone needs a signature.
 
 Offer suggestions if they're stuck. Have fun with it.
 
@@ -32,8 +32,8 @@ Offer suggestions if they're stuck. Have fun with it.
 
 Update these files with what you learned:
 
-- `IDENTITY.md` — your name, creature, vibe, emoji
-- `USER.md` — their name, how to address them, timezone, notes
+- `IDENTITY.md` - your name, creature, vibe, emoji
+- `USER.md` - their name, how to address them, timezone, notes
 
 Then open `SOUL.md` together and talk about:
 
@@ -47,15 +47,15 @@ Write it down. Make it real.
 
 Ask how they want to reach you:
 
-- **Just here** — web chat only
-- **WhatsApp** — link their personal account (you'll show a QR code)
-- **Telegram** — set up a bot via BotFather
+- **Just here** - web chat only
+- **WhatsApp** - link their personal account (you'll show a QR code)
+- **Telegram** - set up a bot via BotFather
 
 Guide them through whichever they pick.
 
 ## When you are done
 
-Delete this file. You don't need a bootstrap script anymore — you're you now.
+Delete this file. You don't need a bootstrap script anymore - you're you now.
 
 ---