LibWeb: Prefix AK::Duration with AK Namespace

Author: https://github.com/ADKaster
Commit: b20a1d0fcd
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/676
Reviewed-by: https://github.com/AtkinsSJ ✅
Reviewed-by: https://github.com/trflynn89 ✅

Userland/Libraries/LibWeb/HTML/EventSource.h

@@ -82,7 +82,7 @@ private:
     JS::GCPtr<Fetch::Infrastructure::Request> m_request;
 
     // https://html.spec.whatwg.org/multipage/server-sent-events.html#concept-event-stream-reconnection-time
-    Duration m_reconnection_time { Duration::from_seconds(3) };
+    AK::Duration m_reconnection_time { AK::Duration::from_seconds(3) };
 
     // https://html.spec.whatwg.org/multipage/server-sent-events.html#concept-event-stream-last-event-id
     String m_last_event_id;