Updated bsp header files with latest release info.

Author: github-actions

bsp/board/include/boards/board_ek_ra6m3/board.h

@@ -40,7 +40,7 @@
  * @file  board.h
  * @brief Main board pin mapping.
  * @note For board-specific changes and version history, refer to the changelogs:
- *       https://github.com/MikroElektronika/mikrosdk_v2/blob/master/changelog/{markdown_path}
+ *       https://github.com/MikroElektronika/mikrosdk_v2/blob/master/changelog/v2.15.1/new_hw/2025-08-21.md
  */
 
 #ifndef _BOARD_H_