docs: update links in README to new domain (close #124)

README.md

@@ -8,15 +8,15 @@
 
 ## Features
 
-- [**Classification**](https://vuepress-plugin-blog.ulivz.com/guide/getting-started.html#document-classifier): 
+- [**Classification**](https://vuepress-plugin-blog.billyyyyy3320.com/guide/getting-started.html#document-classifier): 
 Powerful classification system lets you quickly classify your posts.
-- [**Pagination**](https://vuepress-plugin-blog.ulivz.com/guide/getting-started.html#pagination): 
+- [**Pagination**](https://vuepress-plugin-blog.billyyyyy3320.com/guide/getting-started.html#pagination): 
 Pagination runs through the entire plugin, and it has never been so simple.
-- [**Client APIs**](https://vuepress-plugin-blog.ulivz.com/client-api/): Simple client APIs make it easier for you to write a blog theme.       
+- [**Client APIs**](https://vuepress-plugin-blog.billyyyyy3320.com/client-api/): Simple client APIs make it easier for you to write a blog theme.       
 
 ## Install
 
-We strongly recommend that you read the [Getting Started](https://vuepress-plugin-blog.ulivz.com/guide/getting-started.html) section before using this plugin.
+We strongly recommend that you read the [Getting Started](https://vuepress-plugin-blog.billyyyyy3320.com/guide/getting-started.html) section before using this plugin.
 
 ```bash
 yarn add -D @vuepress/plugin-blog
@@ -31,7 +31,7 @@ module.exports = {
 }
 ```
 
-Please head [documentation](https://vuepress-plugin-blog.ulivz.com/) to see all available options.
+Please head [documentation](https://vuepress-plugin-blog.billyyyyy3320.com/) to see all available options.
 
 
 ## Projects Using `@vuepress/plugin-blog`