validation issues in spec examples

[pwinckles]

I noticed a few problems with the spec examples:

1. All of the examples include an address that is not a URI
2. This example is missing a user
3. The Moab example is invalid because the versions in its inventory are not zero-padded; while the version directories on disk are

[pwinckles]

Additionally, I just glanced at the examples in the implementation notes. The addresses are correct there, but all of the created timestamps are missing their offset.

[zimeon]

Thanks @pwinckles , sigh re spec errors:

1. Yes, the address entries should all have a mailto: prefix
2. I agree that https://ocfl.io/1.0/spec/#example-object-diff-paths would give a warning, probably best that spec examples don't give warnings unless there is a good reason, and maybe then the expected warning and reason should be made explicit
3. Yikes, yes. Per https://ocfl.io/1.0/spec/#versions the Moab example should generate https://ocfl.io/1.0/spec/#E046 "The keys of [the versions] object MUST correspond to the names of the version directories used."

[rosy1280]

Moab objects still need to be fixed.