Example output has property name with single quotes. Fix it.

Signed-off-by: Victor Toso <victortoso@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
---
 qapi/migration.json | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/qapi/migration.json b/qapi/migration.json
index 2658cdbcbe..45dac41f67 100644
--- a/qapi/migration.json
+++ b/qapi/migration.json
@@ -1922,7 +1922,7 @@
 # Example:
 #
 # -> {"execute": "calc-dirty-rate", "arguments": {"calc-time": 1,
-#                                                 'sample-pages': 512} }
+#                                                 "sample-pages": 512} }
 # <- { "return": {} }
 ##
 { 'command': 'calc-dirty-rate', 'data': {'calc-time': 'int64',
-- 
2.41.0