Update content/en/events/isc-2025.md

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: yuhattor

content/en/events/isc-2025.md

@@ -31,7 +31,7 @@ Our three host cities—Yokohama, Berlin, and New York—represent major global
 We prioritize fair pricing structures designed to maximize your return on investment. Our multi-location format offers the unique opportunity to target specific regional markets or achieve global reach in a single event.
 # Celebrate a Decade of InnerSource Innovation
 By sponsoring, you'll be supporting and connecting with the community that's been driving InnerSource adoption and best practices for the past decade.
-For more information about sponsorship opportunities, contact Addie Girouard, Director of Sponsorship at Addie@InnerSourceCommons.org
+For more information about sponsorship opportunities, contact Addie Girouard, Director of Sponsorship at [Addie@InnerSourceCommons.org](mailto:Addie@InnerSourceCommons.org)
 
 ### Call for Presentation Now Open