The pods.md document was referring to the networking.md document, and
was including the docs/ prefix, which led to a 404 due to the link being
https://$host/docs/docs/networking.md. Removing the docs/ prefix gets
the link working again.
This commit addresses issue #1571, which requests that all internal
Kubernetes links are swapped to relative ones to better facilitate
browsing of documentation on local forks, not to mention make the
documentation have less needless boilerplate.