Fixes a bad link in pods.md document

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.
Merge pull request #1781 from jaypipes/doc-fixes

Fixes a bad link in pods.md document