Fix tiny typo in Copyright comment

Author: MrRio

jspdf.js

@@ -6,7 +6,7 @@
  * Copyright (c) 2010-2014 James Hall, https://github.com/MrRio/jsPDF
  *               2010 Aaron Spike, https://github.com/acspike
  *               2012 Willow Systems Corporation, willow-systems.com
- *               2012 Pablo Hess, https://github.gcom/pablohess
+ *               2012 Pablo Hess, https://github.com/pablohess
  *               2012 Florian Jenett, https://github.com/fjenett
  *               2013 Warren Weckesser, https://github.com/warrenweckesser
  *               2013 Youssef Beddad, https://github.com/lifof