Fix registry wasm name not being canonicalized

[ifropc]

Small bug fix. This was previously leading to contract not being found on calling deploy with names like "my_contract" (e.g. when you publish contract with name "my_contract", and then try to deploy it, not found error is returned, because publish canonicalize the name, while deploy did not)

[willemneal]

@ifropc Good catch! I have a big PR to update the registry and I ended up adding a new type which ensures that in storage it's always canonicalized. See here: b4b99e3