minor #20416 Fix CS (MrYamous)

This PR was merged into the 7.2 branch.

Discussion
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Fix CS

Noticed with CI fails in another PR

Commits
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03b029b minor cs fix for ci

Author: xabbuh

serializer/encoders.rst

@@ -65,6 +65,7 @@ are available to customize the behavior of the encoder:
 ``csv_end_of_line`` (default: ``\n``)
     Sets the character(s) used to mark the end of each line in the CSV file.
 ``csv_escape_char`` (default: empty string)
+
     .. deprecated:: 7.2
 
         The ``csv_escape_char`` option was deprecated in Symfony 7.2.