[PATCH] hw/nvme: fix example serial in documentation

[Niklas Cassel]

The serial prop on the controller is actually describing the nvme
subsystem serial, which has to be identical for all controllers within
the same nvme subsystem.

This is enforced since commit a859eb9f8f64 ("hw/nvme: enforce common
serial per subsystem").

Fix the documentation, so that people copying the qemu command line
example won't get an error on qemu start.

Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com>
---
 docs/system/devices/nvme.rst | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/docs/system/devices/nvme.rst b/docs/system/devices/nvme.rst
index aba253304e..30f841ef62 100644
--- a/docs/system/devices/nvme.rst
+++ b/docs/system/devices/nvme.rst
@@ -104,8 +104,8 @@ multipath I/O.
 .. code-block:: console
 
    -device nvme-subsys,id=nvme-subsys-0,nqn=subsys0
-   -device nvme,serial=a,subsys=nvme-subsys-0
-   -device nvme,serial=b,subsys=nvme-subsys-0
+   -device nvme,serial=deadbeef,subsys=nvme-subsys-0
+   -device nvme,serial=deadbeef,subsys=nvme-subsys-0
 
 This will create an NVM subsystem with two controllers. Having controllers
 linked to an ``nvme-subsys`` device allows additional ``nvme-ns`` parameters:
-- 
2.36.1