Fix formatting of the standard

Author: dingo-d

src/Standards/PSR12/Docs/ControlStructures/BooleanOperatorPlacementStandard.xml

@@ -1,7 +1,9 @@
 <documentation title="Boolean Operator Placement">
     <standard>
     <![CDATA[
-    Boolean operators between conditions in certain control structures (if/else conditions, while loops and switch/match statements) must always be at the beginning or at the end of the line, not a mix of both.
+    Boolean operators between conditions in control structures must always be at the beginning or at the end of the line, not a mix of both.
+
+    This rule applies to if/else conditions, while loops and switch/match statements.
     ]]>
     </standard>
     <code_comparison>