[PATCH] fix mkfs man page typo

[Nathan Scott]

diff --git a/man/man8/mkfs.xfs.8 b/man/man8/mkfs.xfs.8
index 242f287..2dcefbe 100644
--- a/man/man8/mkfs.xfs.8
+++ b/man/man8/mkfs.xfs.8
@@ -322,7 +322,7 @@ Setting the value to 0 means that essentially all of
the filesystem
 can become inode blocks, subject to inode32 restrictions.
 .IP
 This value can be modified with
-.Ixfs_growfs(8)
+.IR xfs_growfs (8)
 .
 .TP
 .BI align[= value ]