Add missing comma to ParselyMetadata object

Author: MartinAkram

parsely/src/main/java/com/parsely/parselyandroid/ParselyMetadata.kt

@@ -30,7 +30,7 @@ open class ParselyMetadata
     private val tags: List<String>? = null,
     private val thumbUrl: String? = null,
     private val title: String? = null,
-    private val pubDate: Calendar? = null
+    private val pubDate: Calendar? = null,
     private val pageType: String? = null
 ) {
     /**