minor symfony#8704 Client's history clear alternative (takman1)

This PR was squashed before being merged into the 3.3 branch (closes symfony#8704).

Discussion
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Client's history clear alternative

Another way to clear client's history.

Commits
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153b7f7 Client's history clear alternative

Author: javiereguiluz

components/browser_kit.rst

@@ -226,7 +226,7 @@ also delete all the cookies::
     $client = new Client();
     $client->request('GET', '/');
 
-    // delete history
+    // reset the client (history and cookies are cleared too)
     $client->restart();
 
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