minor #11105 Fix wrong parentheses match in documentation (tdutrion)

This PR was merged into the 4.2 branch.

Discussion
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Fix wrong parentheses match in documentation

There is a typo in the documentation, a squared bracket is opened, and then a bracket was closed.

Commits
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67eb256 Fix wrong parentheses match in documentation

Author: javiereguiluz

workflow/usage.rst

@@ -129,7 +129,7 @@ like this:
                     'marking_store' => [
                         'type' => 'multiple_state', // or 'single_state'
                         'arguments' => ['currentPlace'],
-                    ),
+                    ],
                     'supports' => ['App\Entity\BlogPost'],
                     'places' => [
                         'draft',