Minor grammatical correction in wallet_rpc_api.py (#18955)

changed "is not belong" to "does not belong" in the `did_find_lost_did` endpoint when `derivation_record is None`, in wallet_rpc_api.py.

chia/rpc/wallet_rpc_api.py

@@ -2588,7 +2588,7 @@ async def did_find_lost_did(self, request: dict[str, Any]) -> EndpointResult:
 
         launcher_id = bytes32(singleton_struct.rest().first().as_atom())
         if derivation_record is None:
-            return {"success": False, "error": f"This DID {launcher_id} is not belong to the connected wallet"}
+            return {"success": False, "error": f"This DID {launcher_id} does not belong to the connected wallet"}
         else:
             our_inner_puzzle: Program = self.service.wallet_state_manager.main_wallet.puzzle_for_pk(
                 derivation_record.pubkey