minor symfony#11336 Fix a typo for the range of allowed attack comple…

…xity score values (michaelcullum)

This PR was submitted for the master branch but it was merged into the 3.4 branch instead (closes symfony#11336).

Discussion
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Fix a typo for the range of allowed attack complexity score values

#eufossa

Commits
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1ce2d7b Fix a typo for the range of allowed attack complexity score values

contributing/code/security.rst

@@ -150,7 +150,7 @@ score for Affected Projects is capped at 4.*
 Score Totals
 ~~~~~~~~~~~~
 
-* Attack Complexity: 1 - 4
+* Attack Complexity: 1 - 5
 * Impact: 1 - 6
 * Affected Projects: 1 - 4