Fix typo in sparse_pauli_op.py (backport #11882)

[mergify]

This is an automatic backport of pull request #11882 done by Mergify.
Cherry-pick of 900e910 has failed:

On branch mergify/bp/stable/0.46/pr-11882
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	both modified:   qiskit/quantum_info/operators/symplectic/sparse_pauli_op.py

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To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally

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[coveralls]

Pull Request Test Coverage Report for Build 8080949380

Details

• 0 of 1 (100.0%) changed or added relevant line in 1 file are covered.
• 3 unchanged lines in 1 file lost coverage.
• Overall coverage increased (+0.04%) to 86.928%

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Files with Coverage Reduction	New Missed Lines	%
crates/qasm2/src/lex.rs	3	92.44%

Totals
Change from base Build 8010503631:	0.04%
Covered Lines:	75067
Relevant Lines:	86355

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💛 - Coveralls