Comment crates/rbuilder/src/building/evm_inspector.rs (#159)

## 📝 Summary

Comment crates/rbuilder/src/building/evm_inspector.rs

## 💡 Motivation and Context

<!--- (Optional) Why is this change required? What problem does it
solve? Remove this section if not applicable. -->

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## ✅ I have completed the following steps:

* [ ] Run `make lint`
* [ ] Run `make test`
* [ ] Added tests (if applicable)

crates/rbuilder/src/building/evm_inspector.rs

@@ -36,6 +36,9 @@ impl<'a> UsedStateEVMInspector<'a> {
         }
     }
 
+    /// This method is used to mark nonce change as a slot read / write.
+    /// Txs with the same nonce are in conflict and origin address is EOA that does not have storage.
+    /// We convert nonce change to the slot 0 read and write of the signer
     fn use_tx_nonce(&mut self, tx: &TransactionSignedEcRecovered) {
         self.used_state_trace.read_slot_values.insert(
             SlotKey {