Addressing PR Review Comments

Author: dipeshmsft

xml/System.Windows/MessageBoxResult.xml

@@ -235,7 +235,7 @@
       </ReturnValue>
       <MemberValue>4</MemberValue>
       <Docs>
-        <summary>The result value of the message box is **Result** (usually sent from a button labeled Retry).</summary>
+        <summary>The result value of the message box is **Retry** (usually sent from a button labeled Retry).</summary>
       </Docs>
     </Member>
     <Member MemberName="TryAgain">