Replace embedded YouTube tutorial video (#222)

Co-authored-by: Tom Warwick <tom.warwick@typo3.org>

Author: github-actions[bot]

Documentation/ContentElements/CreatingContent/Index.rst

@@ -7,6 +7,10 @@
 Creating content
 ================
 
+..  youtube:: 834giaL7L6M
+
+------------
+
 ..  image:: /Images/ManualScreenshots/ContentElements/CreateContentElement.png
     :alt: Creating content elements in the TYPO3 backend
     :class: img-thumbnail float-end ms-1 ms-1
@@ -175,8 +179,3 @@ Add new content to a page
 
 ..  include:: /ContentElements/TipKeyboardCommands.rst.txt
 
-Video of creating a content element (TYPO3 11.5)
-================================================
-
-..   youtube:: RuQ4CikixdY
-