Update Aligning.ipynb

[Valence-JonnyHsu]

Checklist:

• [ ] Add tests to cover the fixed bug(s) or the new introduced feature(s) (if appropriate).
• [ ] Update the API documentation is a new function is added or an existing one is deleted.
• [ ] Added a news entry.
  • copy news/TEMPLATE.rst to news/my-feature-or-branch.rst) and edit it.

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Fixing a typo in the Align documentation

[review-notebook-app[bot]]

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[codecov[bot]]

Codecov Report

Merging #147 (9eb5433) into main (9c6368d) will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #147   +/-   ##
=======================================
  Coverage   91.26%   91.26%           
=======================================
  Files          46       46           
  Lines        3239     3239           
=======================================
  Hits         2956     2956           
  Misses        283      283           

Flag	Coverage Δ
unittests	91.26% <ø> (ø)

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[hadim]

Thanks.