minor #7225 Fixed a versionadded directive (javiereguiluz)

This PR was merged into the 3.2 branch.

Discussion
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Fixed a versionadded directive

Commits
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5a82194 Fixed a versionadded directive

Author: xabbuh

components/dom_crawler.rst

@@ -285,7 +285,7 @@ and :phpclass:`DOMNode` objects:
 Expression Evaluation
 ~~~~~~~~~~~~~~~~~~~~~
 
-.. versionadded::
+.. versionadded:: 3.2
     The :method:`Symfony\\Component\\DomCrawler\\Crawler::evaluate` method was
     introduced in Symfony 3.2.