docs: add valine support

Author: wangchucheng

en/customization.md

@@ -114,7 +114,7 @@ You can set the value of the `enableComment` attribute in the Front Matter of th
 
 **comment.handler(string)**
 
-The optional value is `disqus`, `utterances` and `commento`, leave it blank to disable this feature.
+The optional value is `disqus`, `utterances`, `valine` and `commento`, leave it blank to disable this feature.
 
 **comment.disqus.shortname(string)**
 
@@ -124,6 +124,12 @@ The shortname of Disqus.
 
 Utterances related configuration. For specific optional values, please refer to: [utterances](https://utteranc.es/). If you want the color scheme of utterances to follow eureka's, you can set `theme` to `eureka` in config params.
 
+**comment.valine(object)**
+
+Valine related configuration. For specific optional values, please refer to: [Config Reference | Valine](https://valine.js.org/en/configuration.html).
+
+Because Hugo's config params are case-insensitive, you need to add `-` or `_` before the uppercase letters. For example, `appId` should be written as `app-Id` or other acceptable formats.
+
 **comment.commento.url**
 
 If self-hosting, please enter the url (e.g. https://commento.example.com) here. Otherwise leave empty.

zh/customization.md

@@ -114,7 +114,7 @@ content/
 
 **comment.handler(string)**
 
-可选值为`disqus`，`utterances`及`commento`，留空则不启用该功能。
+可选值为`disqus`，`utterances`，`valine`及`commento`，留空则不启用该功能。
 
 **comment.disqus.shortname(string)**
 
@@ -124,6 +124,12 @@ Disqus的shortname值。
 
 Utterances相关配置。具体可选值可参考：[utterances](https://utteranc.es/)。如果你希望Utterances的色彩模式跟随Eureka，只需将配置项中的`theme`设为`eureka`即可。
 
+**comment.valine(object)**
+
+Valine相关配置。具体可选值可参考：[配置项 | Valine](https://valine.js.org/configuration.html)。
+
+因为Hugo的配置文件为大小写不敏感的，因此你需要在大写字母前添加`-`或`_`。例如，`appId`应写作`app-Id`或其他有效形式。
+
 **comment.commento.url**
 
 如果你的commento为自托管的，该值为你的网址(例如https://commento.example.com)。否则留空。