Fixed typo in import

src/app/partials/import.html

@@ -1,5 +1,5 @@
 <div ng-controller="GraphiteImportCtrl" ng-init="init()">
-  <h5>Import dashboards from graphite webb</h5>
+  <h5>Import dashboards from graphite web</h5>
 
   <div class="editor-row">
     <div class="section">