chore: Update READMEs to specify Hexo dependency

- Added link to Hexo repository
- Clarified comment on `original_lang_name` in English version

README.md

@@ -5,7 +5,7 @@ English丨[简体中文](README_zh-CN.md)
 
 A hexo plugin to use [Shiki](https://github.com/shikijs/shiki) as code block highlighter.
 
-Hexo v7.0.0+ is required.
+[Hexo](https://github.com/hexojs/hexo) v7.0.0+ is required.
 
 ## Features
 - Use [Shiki](https://github.com/shikijs/shiki) to render code blocks, and the format is similar to Hexo's default code highlighting (so you don't need to make significant changes to the theme you are currently using).
@@ -90,7 +90,8 @@ See [Dual Themes](https://shiki.style/guide/dual-themes) for how to switch betwe
 You can also specify some languages individually in `original_lang_name` to not convert or only convert them:
 ```yaml
 original_lang_name:
-  # Set to true to exclude the languages listed in `langs`, otherwise only convert the languages in `langs`.
+  # Set to true to exclude the languages listed in `langs`,
+  # otherwise only convert the languages in `langs`.
   exclude: true
   # Must be an array
   langs:

README_zh-CN.md

@@ -5,7 +5,7 @@
 
 一个使用 [Shiki](https://github.com/shikijs/shiki) 作为代码块高亮器的 Hexo 插件。
 
-需要 Hexo v7.0.0+。
+需要 [Hexo](https://github.com/hexojs/hexo) v7.0.0+。
 
 ## 功能
 - 使用 [Shiki](https://github.com/shikijs/shiki) 渲染代码块，且与 Hexo 默认的代码高亮渲染的格式相似（因此你不需要对你现在使用的主题做很大的修改）。