Fixed a expression bug in postProcess

public/js/extra.js

@@ -342,7 +342,7 @@ function postProcess(code) {
         return "<noiframe>" + $(this).html() + "</noiframe>"
     });
     //link should open in new window or tab
-    result.find('a:not([href^=#]):not([target])').attr('target', '_blank');
+    result.find('a:not([href^="#"]):not([target])').attr('target', '_blank');
 	//update continue line numbers
 	var linenumberdivs = result.find('.gutter.linenumber').toArray();
 	for (var i = 0; i < linenumberdivs.length; i++) {