minor symfony#10804 Fix errors in Session methods links (makmaoui)

This PR was submitted for the 4.2 branch but it was merged into the 4.1 branch instead (closes symfony#10804).

Discussion
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Fix errors in Session methods links

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Commits
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3367cba Fix errors in Session methods links

Author: javiereguiluz

components/http_foundation.rst

@@ -243,10 +243,10 @@ method tells you if the request contains a session which was started in one of
 the previous requests.
 
 .. versionadded:: 4.1
-    Using :method:`Symfony\\Component\\HttpFoundation\\Request::getSession()`
+    Using :method:`Symfony\\Component\\HttpFoundation\\Request::getSession`
     when no session has been set was deprecated in Symfony 4.1. It will throw
     an exception in Symfony 5.0 when the session is ``null``. Check for an existing session
-    first by calling :method:`Symfony\\Component\\HttpFoundation\\Request::hasSession()`.
+    first by calling :method:`Symfony\\Component\\HttpFoundation\\Request::hasSession`.
 
 Processing HTTP Headers
 ~~~~~~~~~~~~~~~~~~~~~~~