More user-friendly page titles

Currently all the YAML header sections have the original wiki page name as their title, e.g.

http://biopython.org/wiki/Seq
https://github.com/biopython/biopython.github.io/blob/master/wiki/Seq.md

```

---
title: Seq
permalink: wiki/Seq
layout: wiki
tags:
- Wiki Documentation

---
```

We could go over all the pages and expand the `title:` strings to be more user-friendly - these will get rendered on the page via the theme.

e.g. here maybe "The sequence object, Seq" or something like that might be better?

從 wiki/Seq.md 開始，檢查其 YAML front matter，尤其是 title 和 permalink 欄位，然後檢視其他 wiki 頁面是否採用相同的模式。檢查 theme 如何在頁面上呈現標題。當 wiki 頁面具有更具描述性且更方便使用者理解的標題字串，同時其 permalink 維持不變時，即視為完成。

由索引模型根據 Issue 內容生成。