Added testCaseId for MFTF

Author: engcom-Kilo

app/code/Magento/Rss/Test/Mftf/Test/RssListTest.xml

@@ -14,8 +14,8 @@
             <stories value="RSS Feed available to view"/>
             <title value="RSS Feed"/>
             <description value="View selected RSS feed by link."/>
-            <severity value="AVERAGE"/>
             <testCaseId value="MC-36686"/>
+            <severity value="AVERAGE"/>
         </annotations>
         <before>
             <createData entity="SimpleProductWithNewFromDate" stepKey="createProduct"/>