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>

spec/controllers/public/api/v1/portals/articles_controller_spec.rb

@@ -6,7 +6,10 @@ RSpec.describe 'Public Articles API', type: :request do
   let!(:portal) { create(:portal, slug: 'test-portal', config: { allowed_locales: %w[en es] }, custom_domain: 'www.example.com') }
   let!(:category) { create(:category, name: 'category', portal: portal, account_id: account.id, locale: 'en', slug: 'category_slug') }
   let!(:category_2) { create(:category, name: 'category', portal: portal, account_id: account.id, locale: 'es', slug: 'category_slug') }
-  let!(:article) { create(:article, category: category, portal: portal, account_id: account.id, author_id: agent.id) }
+  let!(:article) do
+    create(:article, category: category, portal: portal, account_id: account.id, author_id: agent.id,
+                     content: 'This is a *test* content with ^markdown^')
+  end
 
   before do
     ENV['HELPCENTER_URL'] = ENV.fetch('FRONTEND_URL', nil)
@@ -43,6 +46,7 @@ RSpec.describe 'Public Articles API', type: :request do
     it 'Fetch article with the id' do
       get "/hc/#{portal.slug}/articles/#{article.slug}"
       expect(response).to have_http_status(:success)
+      expect(response.body).to include(ChatwootMarkdownRenderer.new(article.content).render_article)
       expect(article.reload.views).to eq 1
     end