test: Fix typo (one tx is enough) in p2p_feefilter

Author: MarcoFalke

test/functional/p2p_feefilter.py

@@ -108,7 +108,7 @@ def test_feefilter(self):
         # to 35 entries in an inv, which means that when this next transaction
         # is eligible for relay, the prior transactions from node1 are eligible
         # as well.
-        txids = [miniwallet.send_self_transfer(fee_rate=Decimal('0.00020000'), from_node=node0)['wtxid'] for _ in range(3)]
+        txids = [miniwallet.send_self_transfer(fee_rate=Decimal('0.00020000'), from_node=node0)['wtxid'] for _ in range(1)]
         conn.wait_for_invs_to_match(txids)
         conn.clear_invs()
         self.sync_mempools()  # must be sure node 1 has received all txs