refactor: remove redundant Open Graph site name property from Seo.tsx

Author: shhdgit

src/components/Layout/Seo.tsx

@@ -87,10 +87,6 @@ export default function Seo({
           name: "description",
           content: metaDescription,
         },
-        {
-          property: "og:site_name",
-          content: "TiDB Docs",
-        },
         {
           property: "og:title",
           content: title,