polish and added documentation for new cli tool

exampleSite/content/users/dizzytech.de/index.md

@@ -2,7 +2,7 @@
                 title: "dizzytech.de"
                 tags: [Personal site]
                 externalUrl: "https://dizzytech.de"
-                date: 9975-08-08
+                date: 9977-08-08
                 showDate: false
                 showAuthor: false
                 showReadingTime: false