docs: fix a typo in the AGF section of the disk format doc
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
diff --git a/design/XFS_Filesystem_Structure/allocation_groups.asciidoc b/design/XFS_Filesystem_Structure/allocation_groups.asciidoc
index 38d7357..51ca57d 100644
--- a/design/XFS_Filesystem_Structure/allocation_groups.asciidoc
+++ b/design/XFS_Filesystem_Structure/allocation_groups.asciidoc
@@ -636,7 +636,7 @@
*agf_refcount_root*::
Block number for the root of the reference count B+tree, if enabled.
-*agf_refcount_root*::
+*agf_refcount_level*::
Depth of the reference count B+tree, if enabled.
*agf_spare64*::