package/rockchip-mali: fix typo on Config.in help section

Signed-off-by: Giulio Benetti <giulio.benetti@benettiengineering.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>

package/rockchip-mali/Config.in

@@ -14,7 +14,7 @@ config BR2_PACKAGE_ROCKCHIP_MALI
 	select BR2_PACKAGE_MALI_DRIVER if BR2_LINUX_KERNEL
 	help
 	  Install the binary user-space libraries for the ARM Mali GPU
-	  suitable for Rockchip platforrms. This package requires a
+	  suitable for Rockchip platforms. This package requires a
 	  kernel with the ARM Mali GPU kernel driver enabled, as found
 	  in the 'mali-driver' package.