Update test for dramatic bug

Author: andrew-matteson

test/image/mocks/contour_nonlinear_interpolation.json

@@ -14,7 +14,7 @@
       "type": "contour"
     },
     {
-      "x": [1,2,4,8,16],
+      "x": [1,10,100,1000,10000],
       "y": [1,2,3,4,5],
       "z": [
         [0 ,   3.1250,   12.5000,   28.1250,   50.0000],
@@ -30,7 +30,7 @@
     },
     {
       "x": [1,2,3,4,5],
-      "y": [1,2,4,8,16],
+      "y": [1,10,100,1000,10000],
       "z": [
         [0 ,   3.1250,   12.5000,   28.1250,   50.0000],
         [3.1250,    6.2500,   15.6250,   31.2500,   53.1250],
@@ -44,8 +44,8 @@
       "yaxis": "y2"
     },
     {
-      "x": [1,2,4,8,16],
-      "y": [1,2,4,8,16],
+      "x": [1,10,100,1000,10000],
+      "y": [1,10,100,1000,10000],
       "z": [
         [0 ,   3.1250,   12.5000,   28.1250,   50.0000],
         [3.1250,    6.2500,   15.6250,   31.2500,   53.1250],