[PATCH for-5.1] qapi/machine.json: Fix missing newline in doc comment

[Peter Maydell <peter.maydell@linaro.org>]

In commit 176d2cda0dee9f4 we added the @die-id field
to the CpuInstanceProperties struct, but in the process
accidentally removed the newline between the doc-comment
lines for @core-id and @thread-id.

Put the newline back in; this fixes a misformatting in the
generated HTML QMP reference manual.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
Not very important but I've suggested for-5.1 as it's a safe
docs fix. You can see the misrendered doc at
https://www.qemu.org/docs/master/interop/qemu-qmp-ref.html#index-CpuInstanceProperties

 qapi/machine.json | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/qapi/machine.json b/qapi/machine.json
index f59144023ca..daede5ab149 100644
--- a/qapi/machine.json
+++ b/qapi/machine.json
@@ -825,7 +825,8 @@
 # @node-id: NUMA node ID the CPU belongs to
 # @socket-id: socket number within node/board the CPU belongs to
 # @die-id: die number within node/board the CPU belongs to (Since 4.1)
-# @core-id: core number within die the CPU belongs to# @thread-id: thread number within core the CPU belongs to
+# @core-id: core number within die the CPU belongs to
+# @thread-id: thread number within core the CPU belongs to
 #
 # Note: currently there are 5 properties that could be present
 #       but management should be prepared to pass through other
-- 
2.20.1