Fix typo on readme

Author: carusogabriel

README.md

@@ -727,7 +727,7 @@ Requires comments with single-line content to be written as multi-liners.
 
 Reports documentation comments containing only `{@inheritDoc}` annotation because inheritance is automatic and it's not needed to use a special annotation for it.
 
-#### SlevomatCodingStandard.ControlStructure.UselessConditionWithReturn 🔧
+#### SlevomatCodingStandard.ControlStructures.UselessConditionWithReturn 🔧
 
 Reports useless conditions where both branches return `true` or `false`.