Update 04-Managing-content.md

corrected closed {{ifnlng}} tag
Update 04-Managing-content.md

corrected closed {{ifnlng}} tag
Update 04-Managing-content.md

corrected closing {{ifnlng}} tag
Merge branch '2.11' into 3.0
Merge branch '3.0' into 3.1
Merge branch '3.1' into 3.2
Merge branch '3.2' into 3.3