Fix typo of Target argument name

[nkanazawa1989]

Summary

The misspelled aquire_alignment appears in the Target constructor and attribute. This will be replaced with the correct spelling acquire_alignment.

Details and comments

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[coveralls]

Pull Request Test Coverage Report for Build 4106954054

• 9 of 14 (64.29%) changed or added relevant lines in 3 files are covered.
• 5 unchanged lines in 2 files lost coverage.
• Overall coverage decreased (-0.04%) to 85.243%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
qiskit/providers/backend_compat.py	0	1	0.0%
qiskit/transpiler/target.py	8	12	66.67%

Files with Coverage Reduction	New Missed Lines	%
qiskit/transpiler/passes/synthesis/unitary_synthesis.py	2	93.97%
qiskit/pulse/library/waveform.py	3	91.67%

Totals
Change from base Build 4106750995:	-0.04%
Covered Lines:	67061
Relevant Lines:	78670

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💛 - Coveralls

[jakelishman]

Updated to pull in the fixes to the docs build from #9477.

[wshanks]

Closes #8422