Update CHANGELOG.md

Author: spipu

CHANGELOG.md

@@ -6,7 +6,7 @@ All notable changes to this project will be documented in this file.
 
   * add new Security service, that can be overridden
   * add some doc about new Security service
-  * fix security issue on scheme for cert html tag attributes - thanks to [Positive Technologies](https://www.ptsecurity.com)
+  * fix security issue on scheme for cert html tag attributes - thanks to Aleksey Solovev ([Positive Technologies](https://www.ptsecurity.com))
   * fix UTF8 example
 
 ## [5.3.0](https://github.com/spipu/html2pdf/compare/v5.2.8...v5.3.0) - 2025-01-08