Rename tutorial.py to samples.py (#1110)

* Rename tutorial.py to samples.py

Co-authored-by: Wei Ji <[email protected]>

Author: michaelgrund

pygmt/datasets/__init__.py

@@ -3,7 +3,7 @@
 # Load sample data included with GMT (downloaded from the GMT cache server).
 
 from pygmt.datasets.earth_relief import load_earth_relief
-from pygmt.datasets.tutorial import (
+from pygmt.datasets.samples import (
     load_japan_quakes,
     load_ocean_ridge_points,
     load_sample_bathymetry,

pygmt/datasets/tutorial.py renamed to pygmt/datasets/samples.py

@@ -1,5 +1,5 @@
 """
-Functions to load sample data from the GMT tutorials.
+Functions to load sample data.
 """
 import pandas as pd
 from pygmt.src import which

pygmt/tests/test_datasets_tutorial.py renamed to pygmt/tests/test_datasets_samples.py

@@ -1,5 +1,5 @@
 """
-Test basic functionality for loading datasets for tutorials.
+Test basic functionality for loading sample datasets.
 """
 from pygmt.datasets import (
     load_japan_quakes,