update links

Author: nschloe

test/legacy_writer.py

@@ -105,7 +105,7 @@ def _create_vtkarray(X, name):
         # in Exodus files:
         # If a vector 'v' has two components, they are called 'v_x', 'v_y'
         # (note the underscore), if it has three, then they are called 'vx',
-        # 'vy', 'vz'. See bug <http://vtk.org/Bug/view.php?id=15894>.
+        # 'vy', 'vz'. See bug <https://vtk.org/Bug/view.php?id=15894>.
         # For VT{K,U} files, no underscore is ever added.
         pd.AddArray(_create_vtkarray(X, name))
 

test/test_medit.py

@@ -34,7 +34,8 @@ def test_generic_io():
     helpers.generic_io("test.0.meshb")
 
 
-# same tests with ugrid format files converted with UGC from http://www.simcenter.msstate.edu
+# same tests with ugrid format files converted with UGC from
+# https://www.simcenter.msstate.edu/
 
 
 @pytest.mark.parametrize(