docs(ADDRESSING): default DNSLink to ipfs://

DNSLink resides under `/ipns/` right now, but it is not related to IPNS in any way. 
We should support `ipns://{fqdn}` for completeness and backward compatibility,
however it should be a redirect to `ipfs://{fqdn}`.

Address bar should have `ipfs://{fqdn}`.

This will solve two HUGE problems:
- people being confused why its `ipns://` instead of `ipfs://`
- removing the problem of cross-protocol boundary

ADDRESSING.md

@@ -37,8 +37,8 @@ ipfs://{cidv0} → redirect → ipfs://{cidv1base32} # CIDv0 is case-sensitive B
 ipns://{libp2p-key-in-cidv1base32}
 ipns://{libp2p-key-in-base58} → redirect → ipns://{libp2p-key-in-cidv1}  # Base58, does not work as Origin authority
 
-ipns://{fqdn-with-dnslink}
-ipfs://{fqdn-with-dnslink} → redirect → ipns://{fqdn-with-dnslink} # just to improve UX :-)
+ipfs://{fqdn-with-dnslink}
+ipns://{fqdn-with-dnslink} → redirect → ipfs://{fqdn-with-dnslink} # just to improve UX :-)
 
 dweb:/ipfs/{root}/{resource} → redirect →  ipfs://{root}/{resource}  # ensures {root} is the authority component
 dweb:/ipns/{root}/{resource} → redirect →  ipns://{root}/{resource}  # ensures {root} is the authority component