Merge #20026: test: typo in a functional test doc

a5a6965 [Trivial] python help message (kanon)

Pull request description:

  before:
  `  --segwit              Test behaviour with SegWit txn (which should fail`
  after:
  `  --segwit              Test behaviour with SegWit txn (which should fail)`

ACKs for top commit:
  kristapsk:
    ACK a5a6965

Tree-SHA512: b1176bca8ec4d722fca71fe790ca21dcf05bf7b6562f56ef2758a3e6d7a0554c16a08efc5b154446f75b9a09bd0ff1dfcf22e71010c748caeb02b1f5c883f9ca

test/functional/wallet_txn_clone.py

@@ -25,7 +25,7 @@ def add_options(self, parser):
         parser.add_argument("--mineblock", dest="mine_block", default=False, action="store_true",
                             help="Test double-spend of 1-confirmed transaction")
         parser.add_argument("--segwit", dest="segwit", default=False, action="store_true",
-                            help="Test behaviour with SegWit txn (which should fail")
+                            help="Test behaviour with SegWit txn (which should fail)")
 
     def setup_network(self):
         # Start with split network: