Update README.md

Explicitly specify conflict graphs are RW

README.md

@@ -23,8 +23,8 @@ You can read about these tracers here:
 https://geth.ethereum.org/docs/developers/evm-tracing/built-in-tracers
 
 ## Dataset Overview
-- **prestateTracer**: Contains metrics for conflict graphs generated using prestateTracer.
-- **callTracer**: Contains metrics for conflict graphs generated using callTracer, includes additional metrics related to smart contract invocation call trees.
+- **prestateTracer**: Contains metrics for RW conflict graphs generated using prestateTracer.
+- **callTracer**: Contains metrics for RW conflict graphs generated using callTracer, includes additional metrics related to smart contract invocation call trees.
 
 ## Purpose
 This dataset was collected as part of the *Ethereum Conflicts Graphed* paper, which explores the nature of conflicts graphs in Ethereum transactions through graph-based analysis.