Fixes alignment issue.

Signed-off-by: Eric Wang <skygragon@gmail.com>

Author: skygragon

lib/commands/stat.js

@@ -116,7 +116,7 @@ function showGraph(problems) {
     // padding before group
     if (i % 10 === 1) line.push('   ');
 
-    line.push(graph[i] || '  ');
+    line.push(graph[i] || '　');
 
     // time to start new row
     if (i % (10 * groups) === 0 || i === n) {