reorg api sidebar

Author: jderochervlk

src/layouts/ApiOverviewLayout.res

@@ -5,13 +5,10 @@ let makeCategories: string => array<Sidebar.Category.t> = version => [
     name: "",
     items: [
       {name: "Overview", href: `/docs/manual/${version}/api`},
+      {name: "Core", href: `/docs/manual/${version}/api/core`},
       {name: "Syntax Lookup", href: "/syntax-lookup"},
     ],
   },
-  {
-    name: "Standard Library",
-    items: [{name: "Core", href: `/docs/manual/${version}/api/core`}],
-  },
   {
     name: "Additional Libraries",
     items: [