README: fix inprecise wording for execution fee
Fixes
@@ -64,7 +64,7 @@ learn more about how to use Pool.
## Marketplace Fee
Fees are calculated based on the amount of liquidity purchased. During the
-mainnet alpha, fees will range from 5-25 basis points per user.
+mainnet alpha, fees will range from 5-25 basis points of the matched amount.
## Development
The Pool client is currently in early alpha and offers a simple command line
