Fixed link to knob.js

index.html

@@ -908,7 +908,7 @@
     <script src="plugins/jvectormap/jquery-jvectormap-1.2.2.min.js" type="text/javascript"></script>
     <script src="plugins/jvectormap/jquery-jvectormap-world-mill-en.js" type="text/javascript"></script>
     <!-- jQuery Knob Chart -->
-    <script src="plugins/jqueryKnob/jquery.knob.js" type="text/javascript"></script>
+    <script src="plugins/knob/jquery.knob.js" type="text/javascript"></script>
     <!-- daterangepicker -->
     <script src="plugins/daterangepicker/daterangepicker.js" type="text/javascript"></script>
     <!-- datepicker -->