docs: Complete README cleanup - final fix

- Remove old duplicate sections (#### 5, #### 6)
- Complete Quick Setup Overview with steps 8-9
- Add links to detailed installation and technical docs
- Streamline setup instructions

Co-authored-by: Cursor <cursoragent@cursor.com>

Author: shubham5080

README.md

@@ -191,13 +191,9 @@ Edit config: Set `github.org`, `discord.guild_id`, and `snapshots.repo_path`
 ./.venv/bin/python -m ghdcbot.cli --config config/my-org-config.yaml run-once
 ```
 
-Expected output files (see `data_dir` in `/tmp/ghdcbot-config.yaml`):
-```text
-<data_dir>/reports/audit.json
-<data_dir>/reports/audit.md
-```
+This generates audit reports without making changes. Review `data/my-org/reports/audit.md`.
 
-#### 5. Run Discord Bot
+**8. Run Discord Bot**
 
 Start the Discord bot with slash commands: