[2026-03-25][Fix][general] Distinguish between horizontal rules and escaped hyphens in markdown rendering to prevent incorrect Setext h2 headings.

👤 Author : Matoraaa
🌿 Branch : main
🔗 Commit : 14d17dc
📅 Date : 2026-03-25
📝 Note :
Fix: Distinguish between horizontal rules and escaped hyphens in markdown rendering to prevent incorrect Setext h2 headings.