DOC remove FutureWarnings in plot_manifold_sphere example (#24941)
DOC remove FutureWarnings in plot_manifold_sphere example (#24941)

Co-authored-by: Guillaume Lemaitre <e5e78d384e205244ed69377c80930de68a2732ec@gmail.com>
scikit-learn/scikit-learn,scikit-learn/scikit-learn,betatim/scikit-learn,scikit-learn/scikit-learn,betatim/scikit-learn,betatim/scikit-learn,scikit-learn/scikit-learn,betatim/scikit-learn