update reference

Author: nschloe

test/test_legend_line_scatter_reference.tex

@@ -12,7 +12,19 @@
 y grid style={white!69.01960784313725!black},
 ymin=0.197382370004533, ymax=0.748938053345234
 ]
-\addplot [only marks, draw=color0, fill=color0, colormap/viridis]
+\addplot [only marks, draw=color0, fill=color0, colormap={mymap}{[1pt]
+  rgb(0pt)=(1,0,0);
+  rgb(10pt)=(1,0.9375,0);
+  rgb(11pt)=(0.96875,1,0);
+  rgb(21pt)=(0.03125,1,0);
+  rgb(22pt)=(0,1,0.0625);
+  rgb(32pt)=(0,1,1);
+  rgb(42pt)=(0,0.0625,1);
+  rgb(43pt)=(0.03125,0,1);
+  rgb(53pt)=(0.96875,0,1);
+  rgb(54pt)=(1,0,0.9375);
+  rgb(63pt)=(1,0,0.09375)
+}]
 table{%
 x                      y
 0 0.696469185597862