Update hubot_howto.md

docs/sources/tutorials/hubot_howto.md

@@ -7,7 +7,7 @@ author: Torkel Ödegaard
 
 
 # How to integrate Hubot with Grafana
 # How to integrate Hubot with Grafana
 
 
-Grafana 2.0 shipped with a great feature that enables it render to any graph or panel to a PNG image.
+Grafana 2.0 shipped with a great feature that enables it to render any graph or panel to a PNG image.
 No matter what data source you are using, the PNG image of the Graph will look the same
 No matter what data source you are using, the PNG image of the Graph will look the same
 as it does in your browser.
 as it does in your browser.