feat: replace smooth scroll js with css scroll-behavior

exampleSite/content/about/index.en.md

@@ -79,7 +79,6 @@ math:
 * :(fab fa-css3 fa-fw): **Custom style** shortcode
 * :(fab fa-js-square fa-fw): **Custom script** shortcode
 * :(fas fa-i-cursor fa-fw): **Animated typing** supported by [TypeIt](https://typeitjs.com/)
-* :(fas fa-arrows-up-down fa-fw): **Dynamic scroll** supported by [Smooth Scroll](https://github.com/cferdinandi/smooth-scroll)
 * :(fas fa-cookie-bite fa-fw): **Cookie consent banner** supported by [cookieconsent](https://github.com/osano/cookieconsent)
 * ...
 
@@ -97,7 +96,6 @@ Thanks to the authors of following resources included in the theme:
 * [Font Awesome](https://fontawesome.com/)
 * [Simple Icons](https://github.com/simple-icons/simple-icons)
 * [Animate.css](https://daneden.github.io/animate.css/)
-* [Smooth Scroll](https://github.com/cferdinandi/smooth-scroll)
 * [autocomplete](https://github.com/algolia/autocomplete)
 * [Lunr.js](https://lunrjs.com/)
 * [algoliasearch](https://github.com/algolia/algoliasearch-client-javascript)

exampleSite/content/about/index.zh-cn.md

@@ -79,7 +79,6 @@ math:
 * :(fab fa-css3 fa-fw): 支持**自定义样式**的 shortcode
 * :(fab fa-js-square fa-fw): 支持**自定义脚本**的 shortcode
 * :(fas fa-i-cursor fa-fw): 支持基于 [TypeIt](https://typeitjs.com/) 的**打字动画** shortcode
-* :(fas fa-arrows-up-down fa-fw): 支持基于 [Smooth Scroll](https://github.com/cferdinandi/smooth-scroll) 的**滚动动画**
 * :(fas fa-cookie-bite fa-fw): 支持基于 [cookieconsent](https://github.com/osano/cookieconsent) 的 **Cookie 许可横幅**
 * ...
 
@@ -97,7 +96,6 @@ LoveIt 主题中用到了以下项目，感谢它们的作者：
 * [Font Awesome](https://fontawesome.com/)
 * [Simple Icons](https://github.com/simple-icons/simple-icons)
 * [Animate.css](https://daneden.github.io/animate.css/)
-* [Smooth Scroll](https://github.com/cferdinandi/smooth-scroll)
 * [autocomplete](https://github.com/algolia/autocomplete)
 * [Lunr.js](https://lunrjs.com/)
 * [algoliasearch](https://github.com/algolia/algoliasearch-client-javascript)