Update README.md (#531)

Co-authored-by: Danyal Prout <git@dany.al>

Author: oooLowNeoNooo

reth/README.md

@@ -1,6 +1,6 @@
 # Running a Reth Node
 
-This is a unified implementation of the Reth node set up that supports running both OP Reth or Base Reth with Flashblocks support.
+This is a unified implementation of the Reth node setup that supports running both OP Reth and Base Reth with Flashblocks support.
 
 ## Setup