Change site config to use Kramdown, as Redcarpet no longer supported.
Change site config to use Kramdown, as Redcarpet no longer supported.

avx2/avx2.github.io,wildebeestdev/grpc.github.io,wildebeestdev/grpc.github.io,avx2/avx2.github.io,wildebeestdev/grpc.github.io,avx2/avx2.github.io