Typo fix

production/echarts.html

@@ -614,7 +614,7 @@
               <div class="col-md-4 col-sm-4 col-xs-12">
                 <div class="x_panel">
                   <div class="x_title">
-                    <h2>Guage</h2>
+                    <h2>Gauge</h2>
                     <ul class="nav navbar-right panel_toolbox">
                       <li><a class="collapse-link"><i class="fa fa-chevron-up"></i></a>
                       </li>
@@ -669,4 +669,4 @@
     <script src="../build/js/custom.min.js"></script>
 	
   </body>
-</html>
+</html>