Unreachable link is documentation

[Kostec]

coding_style_guide.md has unreachable link to samples:
https://github.com/NauEngine/NauPrototype/blob/dev/engine/core/kernel/tests/test_runtime/test_functor.cpp

I assume it must be replaced with:
https://github.com/NauEngine/NauEnginePublic/blob/main/engine/core/kernel/tests/test_runtime/test_functor.cpp