fix front matter in PingCastle docs (#14036)

Author: paulOsinski

docs/content/supported_tools/parsers/file/pingcastle.md

@@ -1,7 +1,8 @@
+---
 title: "PingCastle"
 toc_hide: true
 ---
 Import results from the [PingCastle](https://www.pingcastle.com/documentation/).
 
 ### Sample Scan Data
-Sample PingCastle scans can be found [here](https://github.com/DefectDojo/django-DefectDojo/tree/master/unittests/scans/pingcastle).
+Sample PingCastle scans can be found [here](https://github.com/DefectDojo/django-DefectDojo/tree/master/unittests/scans/pingcastle).