Fix typo in sendcoinsdialog.

src/qt/locale/bitcoin_en.ts

@@ -2674,7 +2674,7 @@
     </message>
     <message>
         <location line="+24"/>
-        <source>Using the fallbackfee can result in sending a transaction that will take several hours or days (or never) to confirm. Consider choosing your fee manually or wait until your have validated the complete chain.</source>
+        <source>Using the fallbackfee can result in sending a transaction that will take several hours or days (or never) to confirm. Consider choosing your fee manually or wait until you have validated the complete chain.</source>
         <translation type="unfinished"></translation>
     </message>
     <message>