fix ordering of alpha and beta spins in example notebook #9
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In the LUCJ circuit, alpha qubits come before beta qubits. In Qiskit, qubits are ordered from right to left. Therefore, the alpha qubits are on the right part of the bitstring, and the beta qubits are on the left. In this particular case the numbers of alpha and beta electrons are the same, which is why there is no error, but the distinction is material in the open-shell case.