Update index.bs

#43

Author: simoneonofri

index.bs

@@ -308,7 +308,7 @@ The actors exchange:
 * **Verifiable Presentation (VP)**: When the Holder sends a credential to the Verifier, which then verifies it. VC are used to present claims to a Verifier by proving control over credentials that certify them. The basic case is to present the credential as is. However, in many scenarios, the holder may wish to present only a subset of the credential claims to the verifier - this mechanism is called *Selective Disclosure (SD)* - or a combination of information from different credentials. It may contain:
     * **Metadata**: of the Presentation, including the *Issuer* public key to use for verification purposes.  
     * **Credential(s)**: information derived or combined from one or more credentials. If *Selective Disclosure* is adopted, no credentials are shown, but only a subset of the credential claims.
-    * **Proof(s)**: cryptographic proof of the integrity and authenticity of the presentation. The proof is generated by the Holder. It consists in a proof of knowledge of a credential certifying the (dislosed) credential claims. If *Selective Disclosure* is adopted, the proof is obtained through the use of a cryptographic zero-knowledge proof.
+    * **Proof(s)**: cryptographic proof of the integrity and authenticity of the presentation. The proof is generated by the Holder. It consists in a proof of knowledge of a credential certifying the (dislosed) credential claims. If *Selective Disclosure* is adopted, the proof may be obtained through the use of a cryptographic zero-knowledge proof.
 
 Note: Refer to Ivan Herman’s  [W3C Verifiable Credentials Overview](https://www.w3.org/TR/vc-overview/) for a comprehensive overview of Verifiable Credentials.