yocto_recipe.py: Fix exception text in generate_newer_platform_components()
yocto_recipe.py: Fix exception text in generate_newer_platform_components()

* It doesn't write change summary, but newer-platform-components.list.

Signed-off-by: Martin Jansa <77d25b640e536c950b8ae8cdd4f0574e3b263d04@lge.com>

ros-infrastructure/superflore,ros-infrastructure/superflore