Bug: the unit conversion between PLUMED and ASE in example is incorrect

[kirk0830]

Describe the bug

Because both PLUMED and ASE have their own units including time, energy, length, etc, it is needed to have correct unit conversion between them two. However, previous way specifying the unit in PLUMED by

UNITS LENGTH=A TIME=fs ENERGY=eV

is not appropriate for ASE side.

Expected behavior

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To Reproduce

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Environment

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Additional Context

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