Fix preconnect typo

app/views/layouts/_head.html.haml

@@ -18,7 +18,7 @@
 
   - if ActionController::Base.asset_host
     %link{ rel: 'dns-prefetch', href: ActionController::Base.asset_host }
-    %link{ rel: 'preconnnect', href: ActionController::Base.asset_host, crossorigin: '' }
+    %link{ rel: 'preconnect', href: ActionController::Base.asset_host, crossorigin: '' }
 
   %meta{ 'http-equiv' => 'X-UA-Compatible', content: 'IE=edge' }
 

changelogs/unreleased/fix_preconnect_typo.yml

+---
+title: Fix preconnect typo in rel link
+merge_request: 33255
+author:
+type: performance

spec/views/layouts/_head.html.haml_spec.rb

@@ -50,7 +50,7 @@ describe 'layouts/_head' do
     it 'adds a link preconnect tag' do
       render
 
-      expect(rendered).to match(%Q(<link crossorigin="" href="#{asset_host}" rel="preconnnect">))
+      expect(rendered).to match(%Q(<link crossorigin="" href="#{asset_host}" rel="preconnect">))
     end
   end