fixing typo in options

docs/examples.html

@@ -925,7 +925,7 @@
                                 search: true,
                                 showColumns: true,
                                 showRefresh: true,
-                                minimunCountColumns: 2,
+                                minimumCountColumns: 2,
                                 columns: [{
                                     field: 'state',
                                     checkbox: true