Landing page: reduce tab-width to prevent wrapping
Landing page: reduce tab-width to prevent wrapping

The tabs on the "help by project" card were wrapping on
iPhone, so reducing the padding to prevent this.

Signed-off-by: Sebastiaan van Stijn <64b2b6d12bfe4baae7dad3d018f8cbf6b0e7a044@gone.nl>

docker/docker.github.io,thaJeztah/docker.github.io,thaJeztah/docker.github.io,docker/docker.github.io,docker/docker.github.io,thaJeztah/docker.github.io,thaJeztah/docker.github.io,thaJeztah/docker.github.io,docker/docker.github.io,docker/docker.github.io