Fixed a RST syntax issue

Author: javiereguiluz

profiler/data_collector.rst

@@ -96,7 +96,7 @@ template that includes some specific blocks.
 
 First, add the ``getTemplate()`` method in your data collector class to return
 the path of the Twig template to use. Then, add some *getters* to give the
-template access to the collected information::::
+template access to the collected information::
 
     // src/DataCollector/RequestCollector.php
     namespace App\DataCollector;