chore(consensus): move the todo on ProposalFin to Matan (#2664)

crates/papyrus_protobuf/src/consensus.rs

@@ -86,7 +86,7 @@ pub struct TransactionBatch {
 #[derive(Debug, Clone, PartialEq)]
 pub struct ProposalFin {
     /// The block hash of the proposed block.
-    /// TODO(guyn): Consider changing the content ID
+    /// TODO(Matan): Consider changing the content ID to a signature.
     pub proposal_content_id: BlockHash,
 }