feat(compatibility): improve compatibility for Hugo basic version (#352)

exampleSite/content/posts/theme-documentation-basics/index.en.md

@@ -820,6 +820,10 @@ Add a logo image (127x40) and a cover image (800x600) in the `static` directory.
 
 ### 3.4 Style Customization
 
+{{< admonition >}}
+Hugo **extended** version is necessary for the style customization.
+{{< /admonition >}}
+
 **LoveIt** theme has been built to be as configurable as possible by defining custom `.scss` style files.
 
 The directory including the custom `.scss` style files is `config/css` relative to **your project root directory**.

exampleSite/content/posts/theme-documentation-basics/index.fr.md

@@ -825,6 +825,10 @@ Add a logo image (127x40) and a cover image (800x600) in the `static` directory.
 
 ### 3.4 Style Customization
 
+{{< admonition >}}
+Hugo **extended** version is necessary for the style customization.
+{{< /admonition >}}
+
 **LoveIt** theme has been built to be as configurable as possible by defining custom `.scss` style files.
 
 The directory including the custom `.scss` style files is `config/css` relative to **your project root directory**.

exampleSite/content/posts/theme-documentation-basics/index.zh-cn.md

@@ -824,6 +824,10 @@ smoothScrollJS = 'https://cdn.jsdelivr.net/npm/smooth-scroll@16/dist/smooth-scro
 
 ### 3.4 自定义样式
 
+{{< admonition >}}
+Hugo **extended** 版本对于自定义样式是必需的.
+{{< /admonition >}}
+
 通过定义自定义 `.scss` 样式文件, **LoveIt** 主题支持可配置的样式.
 
 包含自定义 `.scss` 样式文件的目录相对于 **你的项目根目录** 的路径为 `config/css`.