atool: update page (#7900)

pages/linux/atool.md

@@ -13,8 +13,8 @@
 
 - Create a new 7zip archive with two files:
 
-`atool --add {{path/to/archive.7z}} {{path/to/file1}} {{path/to/file2}}`
+`atool --add {{path/to/archive.7z}} {{path/to/file1 path/to/file2 ...}}`
 
 - Extract all zip and rar archives in the current directory:
 
-`atool --each --extract {{*.zip}} {{*.rar}}`
+`atool --each --extract {{*.zip *.rar}}`