Fix typo: x_demonimator -> x_denominator in lamberts_ellipsoidal_distance.py

[ManVT26]

Fixes a typo in variable name on line 85 of lamberts_ellipsoidal_distance.py

x_demonimator → x_denominator

The misspelled variable name is misleading when reading the code.

Fixes #11308

[algorithms-keeper]

Closing this pull request as invalid

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