fix lint

Author: HenryKeen

src/components/images/draw.js

@@ -99,9 +99,9 @@ module.exports = function draw(gd) {
                 var dataURL = canvas.toDataURL('image/png');
 
                 thisImage.attr('xlink:href', dataURL);
-                
+
                 // resolve promise in onload handler instead of on 'load' to support IE11
-                // see https://github.com/plotly/plotly.js/issues/1685 
+                // see https://github.com/plotly/plotly.js/issues/1685
                 // for more details
                 resolve();
             };