fix about download link

Author: LeroyR

pages/rulebook/about.tex

@@ -16,7 +16,7 @@ \section*{How to cite this rulebook}
 \noindent Justin Hart, Alexander Moriarty, Katarzyna Pasternak, Johannes Kummert, Matteo Leonetti, Luis Contreras,
 Alina Hawkin, Vanessa Hassouna, Leroy Ruegemer, Akinobu Mitzutani, Tiago Ribeiro
 \enquote{Robocup@Home \YEAR: Rule and regulations,}
-\url{https://github.com/RoboCupAtHome/RuleBook/releases/download/2024.1/rulebook.pdf}, \YEAR.
+\url{https://github.com/RoboCupAtHome/RuleBook/releases/download/2025.1/rulebook.pdf}, \YEAR.
 
 \begin{center}
 	\begin{minipage}{0.8\textwidth}