Update syntax for loading sample datasets in tutorials (#1750)

Author: michaelgrund

examples/tutorials/basics/plot.py

@@ -14,10 +14,10 @@
 
 ###############################################################################
 # For example, let's load the sample dataset of tsunami generating earthquakes
-# around Japan (:func:`pygmt.datasets.load_japan_quakes`). The data is loaded
-# as a :class:`pandas.DataFrame`.
+# around Japan (:func:`pygmt.datasets.load_sample_data(name="japan_quakes")`).
+# The data is loaded as a :class:`pandas.DataFrame`.
 
-data = pygmt.datasets.load_japan_quakes()
+data = pygmt.datasets.load_sample_data(name="japan_quakes")
 
 # Set the region for the plot to be slightly larger than the data bounds.
 region = [