Update introduction message

src/_locales/en/messages.yml

@@ -3,7 +3,7 @@ extName:
   message: Violentmonkey
 extDescription:
   description: Description for this extension.
-  message: Userscript support for Opera.
+  message: Userscript support for Chromium based browsers like Opera and Chrome.
 extTranslator:
   description: Information of the translator.
   message: 'Gerald <[email protected]>'

src/_locales/zh/messages.yml

@@ -3,7 +3,7 @@ extName:
   message: 暴力猴
 extDescription:
   description: Description for this extension.
-  message: 为Opera提供用户脚本支持。
+  message: 为基于Chromium的浏览器（如Opera和Chrome）提供用户脚本支持。
 extTranslator:
   description: Information of the translator.
   message: 'Gerald <[email protected]>'