[DCS] Updates URL for Document Conversion service

Updating the URL for the Document Conversion service

Author: samir-patel

src/main/java/com/ibm/watson/developer_cloud/document_conversion/v1/DocumentConversion.java

@@ -64,7 +64,7 @@ public class DocumentConversion extends WatsonService {
 
   /** The default URL for the service. */
   private static final String URL =
-      "https://gateway.watsonplatform.net/document-conversion-experimental/api";
+      "https://gateway.watsonplatform.net/document-conversion/api";
 
   private static final JsonObject EMPTY_CONFIG = new JsonParser().parse("{}").getAsJsonObject();