Updated method names in example.

Author: jmcnamara

external_charts/demo4.pl

@@ -22,7 +22,7 @@
 
 
 # Add the chart extracted using the chartex utility
-$worksheet->insert_chart('G2', 'demo401.bin', 3, 3, 1.08, 1.21);
+$worksheet->embed_chart('G2', 'demo401.bin', 3, 3, 1.08, 1.21);
 
 # Link the chart to the worksheet data using a dummy formula.
 $worksheet->store_formula('=Sheet1!A1');

external_charts/demo5.pl

@@ -22,7 +22,7 @@
 
 
 # Embed a chart extracted using the chartex utility
-$worksheet->insert_chart('D3', 'demo501.bin');
+$worksheet->embed_chart('D3', 'demo501.bin');
 
 # Link the chart to the worksheet data using a dummy formula.
 $worksheet->store_formula('=Sheet1!A1');