correctif d'un warning

src/UnicaenEvenement/View/Helper/JournalViewHelper.php

@@ -113,7 +113,7 @@ class JournalViewHelper extends AbstractHelper
         $collapseAtLine=3;
         if ($nbLine <= $collapseAtLine){ return $this->journal->getLog();}
         $collapseClass = uniqid("log-journal-");
-        $html .= sprintf("<div data-bs-toggle='collapse' 
+        $html = sprintf("<div data-bs-toggle='collapse' 
             data-bs-target='.%s'
             aria-expanded='false' 
             aria-controls='%s'