fix syntax

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@46547 15284696-431f-4ddb-bdfa-cd5b030d7da7

scripts/i.spectral/i.spectral.py

@@ -110,7 +110,7 @@ def draw_gnuplot(what, xlabels, output, label):
 	"set noclabel",
 	"set xlabel 'Bands'",
 	"set ylabel 'DN Value'",
-	"set data style lines"
+	"set style data lines"
 	]