Fixed Edit on GitHub link

docs/index.html

@@ -30,7 +30,7 @@
         	let url = 'https://github.com/marcobambini/gravity/edit/master/docs/' + vm.route.file
         	let rev = 'rev1'
         	let version = '0.5.0'
-        	let edit = '[Edit on GitHub](' + url + ')\n'
+        	let edit = '<a href="' + url + '">Edit on GitHub</a>\n'
 
         	return html
           		+ '\n----\n'