fix typo

docs/using-wasabi/CoinJoin.md

@@ -68,7 +68,7 @@ Notice that it is not yet possible to coinjoin from a hardware wallet, the keys
 
 As of Wasabi version [2.2.0.0](https://github.com/WalletWasabi/WalletWasabi/releases/tag/v2.2.0.0), the Wasabi client will only participate in coinjoin rounds where it only pays for the mining fees for the blockspace it uses, like any other bitcoin transaction.
 
-> In rare cases the output decomposition contains change (maximum of 10 000 sats per coinjoin), this leftover goes to the coordinator. This is because creating such small amounts would harm privacy and end up being more expansive than just forfeiting it.
+> In rare cases the output decomposition contains change (maximum of 10 000 sats per coinjoin), this leftover goes to the coordinator. This is because creating such small amounts would harm privacy and ends up being more expensive than just forfeiting it.
 
 The coordinator sets the mining fee rate for the coinjoin transaction.