Fix Bug: last column missing formatting in Latex (#52218) (#60356)

* fix to_latex for multiindex

* add newline

* fix styling

* Update v2.3.0.rst

fix backticks

* update description.

* Apply suggested fix

Co-authored-by: JHM Darbyshire <24256554+attack68@users.noreply.github.com>

* move to v.3

* Update pandas/io/formats/style_render.py

Co-authored-by: Matthew Roeschke <10647082+mroeschke@users.noreply.github.com>

* spacing

* fix whitespace

* fix method name

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Co-authored-by: JHM Darbyshire <24256554+attack68@users.noreply.github.com>
Co-authored-by: Matthew Roeschke <10647082+mroeschke@users.noreply.github.com>