fix(scripts): fix numbering in mt3dms descriptions

scripts/ex-gwt-mt3dms-p03.py

@@ -5,7 +5,7 @@
 # established MT3DMS solutions.
 #
 # Ten example problems appear in the 1999 MT3DMS manual, starting on page 130.  This
-# notebook demonstrates example 10 from the list below:
+# notebook demonstrates example 3 from the list below:
 #
 #   1.  One-Dimensional Transport in a Uniform Flow Field
 #   2.  One-Dimensional Transport with Nonlinear or Nonequilibrium Sorption

scripts/ex-gwt-mt3dms-p04.py

@@ -5,7 +5,7 @@
 # established MT3DMS solutions.
 #
 # Ten example problems appear in the 1999 MT3DMS manual, starting on page 130.  This
-# notebook demonstrates example 10 from the list below:
+# notebook demonstrates example 4 from the list below:
 #
 #   1. One-Dimensional Transport in a Uniform Flow Field
 #   2. One-Dimensional Transport with Nonlinear or Nonequilibrium Sorption

scripts/ex-gwt-mt3dms-p05.py

@@ -5,7 +5,7 @@
 # established MT3DMS solutions.
 #
 # Ten example problems appear in the 1999 MT3DMS manual, starting on page 130.  This
-# notebook demonstrates example 10 from the list below:
+# notebook demonstrates example 5 from the list below:
 #
 #   1. One-Dimensional Transport in a Uniform Flow Field
 #   2. One-Dimensional Transport with Nonlinear or Nonequilibrium Sorption

scripts/ex-gwt-mt3dms-p06.py

@@ -5,7 +5,7 @@
 # established MT3DMS solutions.
 #
 # Ten example problems appear in the 1999 MT3DMS manual, starting on page 130.  This
-# notebook demonstrates example 10 from the list below:
+# notebook demonstrates example 6 from the list below:
 #
 #   1. One-Dimensional Transport in a Uniform Flow Field
 #   2. One-Dimensional Transport with Nonlinear or Nonequilibrium Sorption

scripts/ex-gwt-mt3dms-p07.py

@@ -5,7 +5,7 @@
 # established MT3DMS solutions.
 #
 # Ten example problems appear in the 1999 MT3DMS manual, starting on page 130.  This
-# notebook demonstrates example 10 from the list below:
+# notebook demonstrates example 7 from the list below:
 #
 #   1. One-Dimensional Transport in a Uniform Flow Field
 #   2. One-Dimensional Transport with Nonlinear or Nonequilibrium Sorption

scripts/ex-gwt-mt3dms-p08.py

@@ -5,7 +5,7 @@
 # established MT3DMS solutions.
 #
 # Ten example problems appear in the 1999 MT3DMS manual, starting on page 130.
-# This notebook demonstrates example 10 from the list below:
+# This notebook demonstrates example 8 from the list below:
 #
 #   1. One-Dimensional Transport in a Uniform Flow Field
 #   2. One-Dimensional Transport with Nonlinear or Nonequilibrium Sorption

scripts/ex-gwt-mt3dms-p09.py

@@ -5,7 +5,7 @@
 # established MT3DMS solutions.
 #
 # Ten example problems appear in the 1999 MT3DMS manual, starting on page 130.
-# This notebook demonstrates example 10 from the list below:
+# This notebook demonstrates example 9 from the list below:
 #
 #   1. One-Dimensional Transport in a Uniform Flow Field
 #   2. One-Dimensional Transport with Nonlinear or Nonequilibrium Sorption