[PATCH] qapi: fix mistake in example command illustration

[Daniel P . Berrangé]

The snapshot-load/save/delete commands illustrated their usage, but
mistakenly used 'data' rather than 'arguments' as the field name.

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
---
 qapi/migration.json | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/qapi/migration.json b/qapi/migration.json
index 5975a0e104..1c6296897d 100644
--- a/qapi/migration.json
+++ b/qapi/migration.json
@@ -1888,7 +1888,7 @@
 # Example:
 #
 # -> { "execute": "snapshot-save",
-#      "data": {
+#      "arguments": {
 #         "job-id": "snapsave0",
 #         "tag": "my-snap",
 #         "vmstate": "disk0",
@@ -1949,7 +1949,7 @@
 # Example:
 #
 # -> { "execute": "snapshot-load",
-#      "data": {
+#      "arguments": {
 #         "job-id": "snapload0",
 #         "tag": "my-snap",
 #         "vmstate": "disk0",
@@ -2002,7 +2002,7 @@
 # Example:
 #
 # -> { "execute": "snapshot-delete",
-#      "data": {
+#      "arguments": {
 #         "job-id": "snapdelete0",
 #         "tag": "my-snap",
 #         "devices": ["disk0", "disk1"]
-- 
2.34.1