message: docs(seo2): mark excerpt for guide
diff: @@ -5,6 +5,8 @@ icon: guide
  This plugin will make your site fully support [Open Content Protocol OGP](https://ogp.me/) and [JSON-LD 1.1](https://www.w3.org/TR/json-ld-api/) to enhance the SEO of the site.
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  ## Out of Box
  The plugin works out of the box. Without any config, it will extract information from the page content as much as possible to complete the necessary tags required by OGP and JSON-LD.
  