Fix web site to reference the general and technical policies

[paulidale]

Currently, the old policies (as web pages) coexist with the new policies in the general and technical policies repos.
This needs to be rectified.

[mspncp]

Related to openssl/technical-policies#6.

[paulidale]

Yes, this also covers the general-policies too.

[levitte]

There are still some policies that haven't been moved