chore: cannonical link handling

Signed-off-by: Simon Schrottner <[email protected]>

Author: aepfli

layouts/partials/hooks/head-end.html

@@ -0,0 +1,16 @@
+
+{{ if in .RelPermalink "docs-v" -}}
+  {{ $canoncical := replaceRE "-v[^/]+/" "/" .RelPermalink -}}
+  {{ $canoncicalPath := substr $canoncical 0 -1 -}}
+  {{ if .GetPage $canoncicalPath -}}
+    <link rel="canonical" href="{{ $canoncical | absURL}}"/>
+  {{ else }}
+    {{ range .Site.Pages -}}
+      {{ if in .Aliases $canoncical -}}
+        <link rel="canonical" href="{{ .RelPermalink | absURL}}"/>
+      {{- end }}
+    {{- end}}
+  {{- end}}
+{{ else if in .RelPermalink "/docs/" -}}
+  <link rel="canonical" href="{{ .RelPermalink | absURL}}"/>
+{{- end}}