Drop list markup, since there's just one item left.

Drop "on success" where it is redundant with "Returns:".

Signed-off-by: Markus Armbruster <armbru@redhat.com>
---
 qapi/block-core.json | 4 ++--
 qapi/machine.json    | 4 ++--
 qapi/misc.json       | 2 +-
 3 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/qapi/block-core.json b/qapi/block-core.json
index 94b01deffc..1874f880a8 100644
--- a/qapi/block-core.json
+++ b/qapi/block-core.json
@@ -2457,7 +2457,7 @@
 # @unstable: This command is meant for debugging.
 #
 # Returns:
-#     - BlockDirtyBitmapSha256 on success
+#     BlockDirtyBitmapSha256
 #
 # Errors:
 #     - If @node is not a valid block device, DeviceNotFound
@@ -6084,7 +6084,7 @@
 # @name: optional the snapshot's name to be deleted
 #
 # Returns:
-#     - SnapshotInfo on success
+#     SnapshotInfo
 #
 # Errors:
 #     - If @device is not a valid block device, GenericError
diff --git a/qapi/machine.json b/qapi/machine.json
index 7d3ca33683..bb5a178909 100644
--- a/qapi/machine.json
+++ b/qapi/machine.json
@@ -1090,7 +1090,7 @@
 # Return information about the balloon device.
 #
 # Returns:
-#     - @BalloonInfo on success
+#     @BalloonInfo
 #
 # Errors:
 #     - If the balloon driver is enabled but not functional because
@@ -1156,7 +1156,7 @@
 # message from the guest.
 #
 # Returns:
-#     - @HvBalloonInfo on success
+#     @HvBalloonInfo
 #
 # Errors:
 #     - If no hv-balloon device is present, guest memory status
diff --git a/qapi/misc.json b/qapi/misc.json
index 015388aa3e..1b0c5dad88 100644
--- a/qapi/misc.json
+++ b/qapi/misc.json
@@ -332,7 +332,7 @@
 # @opaque: A free-form string that can be used to describe the fd.
 #
 # Returns:
-#     - @AddfdInfo on success
+#     @AddfdInfo
 #
 # Errors:
 #     - If file descriptor was not received, GenericError
-- 
2.43.0