minor #18399 [PropertyInfo] Fix PhpStanExtractor added version (colinodell)

This PR was merged into the 6.2 branch.

Discussion
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[PropertyInfo] Fix PhpStanExtractor added version

`PhpStanExtractor` was actually added in 5.4: symfony/symfony#40457 (comment)

Commits
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d47d1fc Fix PhpStanExtractor added version

Author: javiereguiluz

components/property_info.rst

@@ -443,9 +443,9 @@ information from annotations of properties and methods, such as ``@var``,
     $phpStanExtractor = new PhpStanExtractor();
     $phpStanExtractor->getTypesFromConstructor(Foo::class, 'bar');
 
-.. versionadded:: 6.1
+.. versionadded:: 5.4
 
-    The ``PhpStanExtractor`` was introduced in Symfony 6.1.
+    The ``PhpStanExtractor`` was introduced in Symfony 5.4.
 
 SerializerExtractor
 ~~~~~~~~~~~~~~~~~~~