Small formatting fix in changelog entry (#8024)

Missed it when I wrote this.

Author: markmandel

docs/change-log/2025-12-04-discord-social-sdk-1.7.13152.md

@@ -7,6 +7,6 @@ topics:
 
 A new release of the Discord Social SDK is now available, with the following updates:
 
-## macOS
+### macOS
 
 - Added support for macOS 10.15 to the build. The minimum versions are now 10.15 for Intel Macs and 11.0 for Apple Silicon Macs.