Merge pull request yajra#32 from wremon/Export_column_fix

Fix page

Author: yajra

export-column.md

@@ -1,12 +1,12 @@
-# Export Column
+# Export Columns
 
 You can export a column customised header if manually set.
 
-<a name="blade"></a>
-## Export Column
+<a name="export-column"></a>
+## Export Columns
 
 ```php
- protected $exportColumns = [
-        ['data' => 'email', 'title' => 'Registered Email],
-    ];
+protected $exportColumns = [
+        ['data' => 'email', 'title' => 'Registered Email'],
+];
 ```