CREDITS: simplify the end-of-file alphabetical order comment

CREDITS: simplify the end-of-file alphabetical order comment

The existing comment references specific individuals by name which becomes
outdated as new entries are added.  Simplify it to state the alphabetical
ordering rule clearly without depending on who happens to be the last
entry.

Link: https://lkml.kernel.org/r/20260312011741.846664-2-hisamshar@gmail.com
Signed-off-by: Hisam Mehboob <hisamshar@gmail.com>
Suggested-by: Randy Dunlap <rdunlap@infradead.org>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Jakub Kacinski <kuba@kernel.org>
Cc: Simon Horman <horms@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>