[PATCH] editorial: introduction: fix IBM link

On Wed, 13 Jul 2022 16:51:27 -0400
"Michael S. Tsirkin" <> wrote:
> OLD
>
> [S390
z/Architecture Principles of Operation, IBM Publication SA22-7832,
> PoP]
http://publibfi.boulder.ibm.com/epubs/pdf/dz9zr009.pdf, and any future
>
revisions
>
> NEW (should be)
>
> [S390 PoP] z/Architecture Principles of Operation, IBM Publication SA22-7832,
> https://www.ibm.com/docs/en/SSQ2R2_15.0.0/com.ibm.tpf.toolkit.hlasm.doc/
> dz9zr006.pdf, and any future revisions
>
> [only changes the hyperlink]
>
> Reported-by: Paul Knight <>
> Signed-off-by: Michael S. Tsirkin <>

Hm, the new link links to an older revision... The old link seems to
work for me, but I don't know which one is more canonical and supposed
to be more robust. Will do some digging. The new one does look cleaner
though.

Regards,
Halil