minor bugfix for links to non-renderable URLs in nbextension config
minor bugfix for links to non-renderable URLs in nbextension config

benvarkey/IPython-notebook-extensions,jcb91/IPython-notebook-extensions,jbn/IPython-notebook-extensions,benvarkey/IPython-notebook-extensions,ipython-contrib/IPython-notebook-extensions,ipython-contrib/IPython-notebook-extensions,ipython-contrib/IPython-notebook-extensions,benvarkey/IPython-notebook-extensions,jbn/IPython-notebook-extensions,andyneff/IPython-notebook-extensions,andyneff/IPython-notebook-extensions,benvarkey/IPython-notebook-extensions,andyneff/IPython-notebook-extensions,jcb91/IPython-notebook-extensions,andyneff/IPython-notebook-extensions,juhasch/IPython-notebook-extensions,ipython-contrib/IPython-notebook-extensions,juhasch/IPython-notebook-extensions,jcb91/IPython-notebook-extensions,juhasch/IPython-notebook-extensions,jbn/IPython-notebook-extensions,jbn/IPython-notebook-extensions