Proposed rewording in Section 1.2 about Key Binding

[Denisthemalice]

Clause 1.2 states:

Key Binding:
Ability of the Holder to prove legitimate possession of an SD-JWT by proving control over a private key during the presentation. When utilizing Key Binding, an SD-JWT contains the public key corresponding to the private key controlled by the Holder (or a reference to this public key).

Change into:

Key Binding:
When utilizing Key Binding, an SD-JWT contains the public key corresponding to the private key controlled by the Holder (or a reference to this public key). In that case, the Verifier can verify that a private key corresponding to a public key that has been included by the Issuer into the SD-JWT has correctly been used to compute a cryptographic checksum.