feat: Adds support for superscript in help center articles (#7279)

- Adds support for superscript when rendering article markdown
- Chatwoot Markdown Render to render markdown everywhere

Co-authored-by: Sojan <sojan@pepalo.com>

app/controllers/public/api/v1/portals/articles_controller.rb

@@ -43,8 +43,6 @@ class Public::Api::V1::Portals::ArticlesController < Public::Api::V1::Portals::B
   end
 
   def render_article_content(content)
-    # rubocop:disable Rails/OutputSafety
-    CommonMarker.render_html(content).html_safe
-    # rubocop:enable Rails/OutputSafety
+    ChatwootMarkdownRenderer.new(content).render_article
   end
 end