facts about Birmingham should be bullet points instead of being numbered.

### Link to the page

https://codeyourfuture.github.io/github_issues_prs_practice/

### Steps to reproduce

Logged on the fun five facts website. After scrolling the page on the third section I identified that the facts were numbered instead of being bullet points as specified in the requirement.md

開啟連結的 fun five facts 網站並閱讀 requirement.md，然後檢查包含 Birmingham 事實的第三個區段。將編號呈現改為項目符號，並確認呈現後的頁面符合需求。

由索引模型根據 Issue 內容生成。