Improve Markdown autodiscovery (#2186)

* Add HTTP response header

* Add HTML <head> link

* Add 'View as Markdown' link

qdrant-landing/themes/qdrant-2024/layouts/partials/head.html

@@ -53,6 +53,10 @@
     <link href="{{ .RelPermalink }}" rel="feed" type="{{ .MediaType.Type }}" title="{{ $.Site.Title }}" />
   {{ end }}
 
+  {{ with .OutputFormats.Get "Markdown" }}
+    <link rel="alternate" type="{{ .MediaType.Type }}" href="{{ .Permalink }}" title="{{ $.Page.Title }}" />
+  {{ end }}
+
   {{ partial "seo_schema" . }}
   {{ partial "js-head" . }}
 </head>

qdrant-landing/themes/qdrant-2024/layouts/partials/table-of-contents.html

@@ -24,6 +24,12 @@
       {{ else }}
         <ul class="table-of-contents__external-links">
           {{ if or (eq .Section "documentation") (eq .Section "articles") }}
+            <li class="table-of-contents__link">
+              <a href="{{ .Permalink }}index.md" target="_blank">
+                {{ partial "svg" "markdown.svg" }}
+                View as Markdown
+              </a>
+            </li>
             <li class="table-of-contents__link">
               <a href="{{ .Site.Params.githubDocPrefix }}{{ path.Clean .File.Path }}" target="_blank">
                 {{ partial "svg" "github.svg" }}