chore: clarification comments are added for sig verification

pallets/ddc-clusters/src/lib.rs

@@ -242,6 +242,7 @@ pub mod pallet {
 			let caller_id = ensure_signed(origin)?;
 			let cluster =
 				Clusters::<T>::try_get(&cluster_id).map_err(|_| Error::<T>::ClusterDoesNotExist)?;
+
 			let is_cluster_manager =
 				Self::validate_signature(&cluster.manager_id, &signature, &data)?;
 			ensure!(is_cluster_manager, Error::<T>::SignatureMismatch);
@@ -260,6 +261,9 @@ pub mod pallet {
 			signature: &T::Signature,
 			data: &Vec<u8>,
 		) -> Result<bool, Error<T>> {
+			// In the Runtime configuration, we have the AccountId type set to <<MultiSignature as
+			// Verify>::Signer as IdentifyAccount>::AccountId; The Signer type is set to MultiSigner
+			// were AccountId type is AccountId32 that is always 32 bytes in length
 			let pub_key: [u8; 32] = match signer_id.encode().as_slice()[..].try_into() {
 				Ok(pub_key) => pub_key,
 				Err(_) => return Err(Error::<T>::SignatureValidationFailed),