feat: append the hb-content into the content class list

Author: razonyang

layouts/partials/hb/modules/docs/doc.html

@@ -1,6 +1,6 @@
 {{ partial "hugopress/functions/render-hooks" (dict "Page" . "Name" "hb-docs-doc-content-begin") }}
 {{- $attributes := partial "hugopress/functions/render-attributes" (dict "Page" . "Name" "hb-docs-doc-content") }}
-<div class="hb-docs-doc-content hb-module"{{ with $attributes }} {{ . | safeHTMLAttr }}{{ end }}>
+<div class="hb-docs-doc-content hb-content hb-module"{{ with $attributes }} {{ . | safeHTMLAttr }}{{ end }}>
   {{ .Content }}
 </div>
 {{ partial "hugopress/functions/render-hooks" (dict "Page" . "Name" "hb-docs-doc-content-end") }}

layouts/partials/hb/modules/docs/section.html

@@ -5,7 +5,7 @@ <h1 class="hb-docs-doc-title mb-0">{{ .Title }}</h1>
   {{- end }}
 </div>
 {{ partial "hugopress/functions/render-hooks" (dict "Page" . "Name" "hb-docs-doc-content-begin") }}
-<div class="hb-docs-doc-content hb-module">
+<div class="hb-docs-doc-content hb-content hb-module">
   {{ .Content }}
   {{- if .Pages }}
     <h2 class="mb-3">{{ i18n "in_this_section" }}</h2>