minor #13324 [Security] PHP Syntax Fix (David Schmidt)

This PR was submitted for the 4.3 branch but it was merged into the 4.4 branch instead (closes #13324).

Discussion
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[Security] PHP Syntax Fix

Commits
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1185077 [Security] PHP Syntax Fix

Author: javiereguiluz

security.rst

@@ -272,7 +272,7 @@ important section is ``firewalls``:
                 'dev' => [
                     'pattern' => '^/(_(profiler|wdt)|css|images|js)/',
                     'security' => false,
-                ),
+                ],
                 'main' => [
                     'anonymous' => 'lazy',
                 ],