[PATCH] docs: isofs: replace dead ECMA-119 FTP link

[Ziran Zhang]

The original link is no longer valid.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@xxxxxxxx>
---
 Documentation/filesystems/isofs.rst | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Documentation/filesystems/isofs.rst b/Documentation/filesystems/isofs.rst
index 08fd46909..2a30999b0 100644
--- 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
-- 
2.43.0