Fix formatting of allow-all command in README

Author: sebastiantecsi

01-setup-and-first-steps/README.md

@@ -422,7 +422,7 @@ That's it for getting started! As you become comfortable, you can explore additi
 | Command | What It Does |
 |---------|--------------|
 | `/add-dir <directory>` | Add a directory to allowed list |
-| `/allow-all [on|off|show]` | Auto-approve all permission prompts; use `on` to enable, `off` to disable, `show` to check current status |
+| `/allow-all [on\|off\|show]` | Auto-approve all permission prompts; use `on` to enable, `off` to disable, `show` to check current status |
 | `/yolo` | Quick alias for `/allow-all on` — auto-approves all permission prompts. |
 | `/cwd`, `/cd [directory]` | View or change working directory |
 | `/list-dirs` | Show all allowed directories |