Updated README

Author: avwsolutions

Solutions/NCSC-NL NDN Cyber Threat Intelligence Sharing/Playbooks/NCSCNLShareSTIXBundle/README.md

@@ -32,7 +32,7 @@ This playbook is inspired on the previous *ACSC* codecase and is enhanced with a
     * Tag for indicators after export completion
     * Default TLP Label
 3. Optional you can set the following parameters:
-    * Include Sighting Object (default is true)
+    * Include Sighting Object (default is yes)
     * TAXII Server Username (default is using API Key)
     * TAXII Server Password (default is using API Key)