changed NASAGIBS Blue Marble to NASAGIBS BlueMarble3413 in examples

[S-Panta]

NASAGIBS Blue Marble was removed from xyzservices provider list as the endpoint doesn't work. (https://github.com/geopandas/xyzservices/pull/158) I suggest the example in Folium to be replaced with either "BlueMarble3413 or "BlueMarble3031. However, at the moment, the URL that's in their json file of these two tiles isn't working and throws 400 error.
Or, maybe this example can be thrown out as it would be very confusing.