Apply style guideline

Follow-up gitlab-org/gitlab#47131

spec/lib/banzai/filter/ascii_doc_sanitization_filter_spec.rb

@@ -24,13 +24,13 @@ RSpec.describe Banzai::Filter::AsciiDocSanitizationFilter do
 
   it 'preserves user-content- prefixed ids on div (blocks)' do
     html_content = <<~HTML
-<div id="user-content-open-block" class="openblock">
+      <div id="user-content-open-block" class="openblock">
         <div class="content">
           <div class="paragraph">
             <p>This is an open block</p>
           </div>
         </div>
-</div>
+      </div>
     HTML
     output = <<~SANITIZED_HTML
       <div id="user-content-open-block">
@@ -43,6 +43,7 @@ RSpec.describe Banzai::Filter::AsciiDocSanitizationFilter do
     SANITIZED_HTML
     expect(filter(html_content).to_html).to eq(output)
   end
+
   it 'preserves section anchor ids' do
     result = filter(%(<h2 id="user-content-first-section">
 <a class="anchor" href="#user-content-first-section"></a>First section</h2>)).to_html