Update _tour/pattern-matching.md

Co-authored-by: Philippus Baalman <[email protected]>

Author: mhghaffari

_tour/pattern-matching.md

@@ -269,7 +269,7 @@ def showNotification(notification: Notification): String =
       s"You got an email from $sender with title: $title"
     case SMS(number, message) =>
       s"You got an SMS from $number! Message: $message"
-    case VoiceRecording(contactName: String, link: String) =>
+    case VoiceRecording(name, link) =>
       s"You received a Voice Recording from $name! Click the link to hear it: $link"
 ```
 {% endtab %}