doc: fix typo in dev layering notes

Signed-off-by: Josh Durgin <josh.durgin@inktank.com>

diff --git a/doc/dev/rbd-layering.rst b/doc/dev/rbd-layering.rst
index cead58c727570dee8bd00257092884bf3cbba476..2bc833f6677905dce3de5e30a15ca4a587ac4ff0 100644 (file)
--- a/doc/dev/rbd-layering.rst
+++ b/doc/dev/rbd-layering.rst
@@ -49,7 +49,7 @@ that there are no children left:
     $ rbd rm pool2/child2
     $ rbd snap rm pool/image@snap
     Cannot remove a protected snapshot: pool/image@snap
-    $ rbd unprotect pool/image@snap
+    $ rbd snap unprotect pool/image@snap
 
 Then the snapshot can be deleted like normal:
 ::