docs: new add coding pages

You can visit https://d3jc40.coding-pages.com for a better reading experience.

Author: yanglbme

README.md

@@ -18,7 +18,11 @@
 [English Version](/README_EN.md)
 
 ## 站点
-GitHub Pages: https://doocs.github.io/leetcode
+- GitHub Pages: https://doocs.github.io/leetcode
+- Coding Pages: https://d3jc40.coding-pages.com
+- Gitee Pages(构建失败): https://doocs.gitee.io/leetcode
+
+注：若 [GitHub Pages](https://doocs.github.io/leetcode) 访问加载过慢，可访问 [Coding Pages](https://d3jc40.coding-pages.com)。
 
 ## 题解
 - [LeetCode](/solution/README.md)

README_EN.md

@@ -17,8 +17,10 @@ Complete solutions to [LeetCode](https://leetcode-cn.com/problemset/all/), [LCOF
 
 [中文文档](/README.md)
 
-## Site
-GitHub Pages: https://doocs.github.io/leetcode
+## Sites
+- GitHub Pages: https://doocs.github.io/leetcode
+- Coding Pages: https://d3jc40.coding-pages.com
+- Gitee Pages(build failed): https://doocs.gitee.io/leetcode
 
 ## Solutions
 - [LeetCode](/solution/README_EN.md)