correction probleme typo

frontend/src/scripts/UI/IntersectionObserver/header.js

@@ -7,7 +7,7 @@ const handleHeaderIntersection = function (entries) {
 
 const section_header = document.querySelector("header");
 if (section_header) {
-  const headerObserver = new IntersectionObserver(handle
Synthesis
Intersection);
+  const headerObserver = new IntersectionObserver(handle
Header
Intersection);
   if (headerObserver) headerObserver.observe(section_header);
 } else myLog('No header to observe');