message: docs(theme): fix article link for configProvider
diff: ### Deprecated
  -This document is deprecated. Vant provides a more convenient [ConfigProvider](/#zh-CN/config-provider) component for theme configuration. Less variables **will be removed in the next major version**.
  +This document is deprecated. Vant provides a more convenient [ConfigProvider](#/en-US/config-provider) component for theme configuration. Less variables **will be removed in the next major version**.
  ### Intro
  