x/website: discoverability of Security contents

[Deleplace]

There exists a nice page https://go.dev/security/ but I can't find how to navigate there from the website. As a result, some great contents like Go Fuzzing seem to be buried.

We may add a Security link in the footer, and in https://go.dev/doc/

[findleyr]

A Security link in the footer makes sense to me. CC @julieqiu @jamalc

[julieqiu]

Agreed! It also looks like the Why Go dropdown currently links to https://go.dev/security/policy, and it should probably link to https://go.dev/security instead.