Fix typo in payment overages message

Replaced "replay" with "repay" in the text describing payment overages during a contract. Ensured clarity in user-facing messaging.

MekHQ/src/mekhq/campaign/Campaign.java

@@ -7852,7 +7852,7 @@ public void completeMission(@Nullable Mission mission, MissionStatus status) {
                 getFinances().credit(TransactionType.CONTRACT_PAYMENT, getLocalDate(), remainingMoney,
                         "Repaying payment overages for " + contract.getName());
                 addReport("Your account has been debited for " + remainingMoney.absolute().toAmountAndSymbolString()
-                        + " to replay payment overages occurred during the contract " + contract.getName());
+                        + " to repay payment overages occurred during the contract " + contract.getName());
             }
 
             // This relies on the mission being a Contract, and AtB to be on