Update EIP-2537: multiplication_cost for G2 update to make it divisible by 1000

Author: rodiazet

EIPS/eip-2537.md

@@ -242,7 +242,7 @@ Assuming `EcRecover` precompile as a baseline.
 
 #### G2 multiplication
 
-`22500` gas
+`23000` gas
 
 #### G1/G2 MSM