updated release date

Author: gitbrent

demos/browser/index.html

@@ -6,7 +6,7 @@
 	<meta name="author" content="https://github.com/gitbrent">
 	<meta name="website" content="https://github.com/gitbrent/PptxGenJS/">
 	<meta name="version" content="4.0.0">
-	<meta name="updated" content="2025-04-26">
+	<meta name="updated" content="2025-05-04">
 	<link rel="icon" href="images/favicon-32x32.png" sizes="32x32" type="image/png">
 	<link rel="icon" href="images/favicon-16x16.png" sizes="16x16" type="image/png">
 	<link rel="icon" href="images/favicon.png">