Rename theme path

themes/hugo-theme-gruvbox/layouts/index.html

@@ -0,0 +1,12 @@
+{{ define "main" }}
+  <div class="content-section">
+    <h1>{{ .Title | markdownify }}</h1>
+    {{ with .Content }}
+      <div>{{ . }}</div>
+    {{ end }}
+  </div>
+  <!-- See https://gohugo.io/functions/where/#mainsections -->
+  {{ $pages := where site.RegularPages "Type" "in" site.Params.mainSections }}
+  {{ $paginator := .Paginate $pages }}
+  {{ partial "post-list.html" $paginator }}
+{{ end }}