fix: Dirac notation for Pauli-Y

[tongkiat]

In "Utility-scale quantum computing", chapter "Quantum bits, gates, and circuits" (https://github.com/Qiskit/documentation/blob/main/learning/courses/utility-scale-quantum-computing/bits-gates-and-circuits.ipynb), section "3.2 Single-qubit quantum state and unitary evolution", paragraph 3, the Pauli-Y gate (using Dirac notation) is given as -1 |0><1| + i |1><0|.

Shouldn't it be -i |0><1| + i |1><0|?

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