Merge bitcoin/bitcoin#31952: chore: remove redundant word

d9ba427 chore: remove redundant word (costcould)

Pull request description:

  remove redundant word

ACKs for top commit:
  maflcko:
    lgtm ACK d9ba427

Tree-SHA512: cdcd36a589c1463bdd18f4272d1b8ede4726598ae41d3f84d366ba9a584a95846aff328471b4632abcf173c1d822f5bb7d08b3a02b2de231dd1a8b5176b2b9aa

Author: fanquake

test/functional/p2p_orphan_handling.py

@@ -771,7 +771,7 @@ def test_parents_change(self):
         node.bumpmocktime(NONPREF_PEER_TX_DELAY + TXID_RELAY_DELAY)
         peer1.wait_for_getdata([int(parent_missing["txid"], 16)])
 
-        # Replace parent_peekaboo_AB so that is is a newly missing parent.
+        # Replace parent_peekaboo_AB so that is a newly missing parent.
         # Then, replace the replacement so that it can be resubmitted.
         node.sendrawtransaction(tx_replacer_BC["hex"])
         assert tx_replacer_BC["txid"] in node.getrawmempool()