GNUplot: change font size

gnuplot/tensorflow-metrics.plt

@@ -1,7 +1,7 @@
-set title graph_title
-set xlabel "Epochs"
-set ylabel metric_name
-set key title "Legend"
+set title graph_title font "Ubuntu,24"
+set xlabel "Epochs" font "Ubuntu,20"
+set ylabel metric_name font "Ubuntu,20"
+set key title "Legend" font "Ubuntu,20"
 set grid
 
 set datafile separator "\t"