Merge pull request bitcoin#1082 from molnard/patch-1

Fix word duplication

Author: kallewoof

bip-0078.mediawiki

@@ -209,7 +209,7 @@ In such case, the receiver will need to increase the fee of the transaction afte
 * The sender's wallet software is using round fee rate.
 
 If the sender's fee rate is always round, then a blockchain analyst can easily spot the transactions of the sender involving payjoin by checking if, when removing a single input to the suspected payjoin transaction, the resulting fee rate is round.
-To prevent this, the sender can agree to pay more more fee so the receiver make sure that the payjoin transaction fee is also round.
+To prevent this, the sender can agree to pay more fee so the receiver make sure that the payjoin transaction fee is also round.
 
 * The sender's transaction is time sensitive.