a longer trigger for pygal chart

Author: ashfinal

UltiSnips/rst.snippets

@@ -302,7 +302,7 @@ snippet fnt "Footnote or Citation" i
 endsnippet
 
 # Only for Nikola — Static Site Generator
-snippet cha "pygal chart" b
+snippet chart "Pygal chart for Nikola" b
 .. chart:: $1`!p snip.rv=complete(t[1], CHART_TYPES)`
 	:title: '${2:Browser usage evolution (in %)}'
 	:x_labels: [${3:"2002", "2003", "2004", "2005", "2006", "2007"}]