DOC: use notebook-style for plot_pca_3d.py (#23064)
DOC: use notebook-style for plot_pca_3d.py (#23064)

Co-authored-by: Loïc Estève <b4f57ceb208f2c5eae4e1192d707c3466a564837@ymail.com>
anntzer/scikit-learn,lesteve/scikit-learn,scikit-learn/scikit-learn,saiwing-yeung/scikit-learn,TomDLT/scikit-learn,TomDLT/scikit-learn,jakirkham/scikit-learn,saiwing-yeung/scikit-learn,espg/scikit-learn,betatim/scikit-learn,ivannz/scikit-learn,TomDLT/scikit-learn,scikit-learn/scikit-learn,espg/scikit-learn,vinayak-mehta/scikit-learn,jakirkham/scikit-learn,TomDLT/scikit-learn,betatim/scikit-learn,manhhomienbienthuy/scikit-learn,manhhomienbienthuy/scikit-learn,AlexandreAbraham/scikit-learn,vinayak-mehta/scikit-learn,manhhomienbienthuy/scikit-learn,lesteve/scikit-learn,anntzer/scikit-learn,vinayak-mehta/scikit-learn,AlexandreAbraham/scikit-learn,betatim/scikit-learn,espg/scikit-learn,lesteve/scikit-learn,AlexandreAbraham/scikit-learn,betatim/scikit-learn,vinayak-mehta/scikit-learn,ivannz/scikit-learn,anntzer/scikit-learn,scikit-learn/scikit-learn,saiwing-yeung/scikit-learn,ivannz/scikit-learn,saiwing-yeung/scikit-learn,anntzer/scikit-learn,jakirkham/scikit-learn,lesteve/scikit-learn,ivannz/scikit-learn,espg/scikit-learn,manhhomienbienthuy/scikit-learn,scikit-learn/scikit-learn,jakirkham/scikit-learn,AlexandreAbraham/scikit-learn