docs: isofs: replace dead ECMA-119 FTP link

The original link is no longer valid. Replace it with the official
PDF of the 2nd edition. The new link points to the exact 2nd edition
that the existing comment in isofs.rst refers to.

Signed-off-by: Ziran Zhang <zhangcoder@yeah.net>
Link: https://patch.msgid.link/20260425142943.6809-1-zhangcoder@yeah.net
Signed-off-by: Jan Kara <jack@suse.cz>

diff --git a/Documentation/filesystems/isofs.rst b/Documentation/filesystems/isofs.rst
index 08fd469091d4bfc53cd987d69d1355e478b9545d..2a30999b024f31362620b6bd0c08d97d558683dd 100644 (file)
--- a/Documentation/filesystems/isofs.rst
+++ b/Documentation/filesystems/isofs.rst
@@ -57,7 +57,7 @@ Mount options unique to the isofs filesystem.
 Recommended documents about ISO 9660 standard are located at:
 
 - http://www.y-adagio.com/
-- ftp://ftp.ecma.ch/ecma-st/Ecma-119.pdf
+- https://ecma-international.org/wp-content/uploads/ECMA-119_2nd_edition_december_1987.pdf
 
 Quoting from the PDF "This 2nd Edition of Standard ECMA-119 is technically
 identical with ISO 9660.", so it is a valid and gratis substitute of the