Fixed deprecated notation for PHPCS

Author: yann-eugone

phpcs.xml.dist

@@ -15,7 +15,11 @@
 
     <rule ref="Generic.PHP.ForbiddenFunctions">
         <properties>
-            <property name="forbiddenFunctions" type="array" value="dump=>null,var_dump=>null,die=>null"/>
+            <property name="forbiddenFunctions" type="array">
+                <element key="dump" value="null"/>
+                <element key="var_dump" value="null"/>
+                <element key="die" value="null"/>
+            </property>
         </properties>
     </rule>