chattr: add sudo (#19762)

Author: Managor

pages/linux/chattr.md

@@ -5,20 +5,20 @@
 
 - Make a file or directory [i]mmutable to changes and deletion, even by superuser:
 
-`chattr +i {{path/to/file_or_directory}}`
+`sudo chattr +i {{path/to/file_or_directory}}`
 
 - Make a file or directory mutable:
 
-`chattr -i {{path/to/file_or_directory}}`
+`sudo chattr -i {{path/to/file_or_directory}}`
 
 - [R]ecursively make an entire directory and contents immutable:
 
-`chattr -R +i {{path/to/directory}}`
+`sudo chattr -R +i {{path/to/directory}}`
 
 - Mark a directory and its files to be interpreted in a case-insensitive manner (case-[F]olding):
 
 `chattr +F {{path/to/directory}}`
 
 - Set a file to only allow [a]ppending:
 
-`chattr +a {{path/to/file}}`
+`sudo chattr +a {{path/to/file}}`