[Nbd] [PATCH] write-zeroes: Fix doc typo prior to mainline merge

[Eric Blake <eblake@...696...>]

Signed-off-by: Eric Blake <eblake@...696...>
---

This is the only thing I noticed broken in extensions-write-zeroes
when comparing it to mainline, so I think we're ready to merge.

(Well, this, and the dead mainloop() code is a pointless merge, but
I'll post that patch separately).

 doc/proto.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/doc/proto.md b/doc/proto.md
index afe71fc..445778f 100644
--- a/doc/proto.md
+++ b/doc/proto.md
@@ -286,7 +286,7 @@ The server MAY process commands out of order, and MAY reply out of
 order, except that:

 * All write commands (that includes `NBD_CMD_WRITE`,
-  `NBD_WRITE_ZEROES` and `NBD_CMD_TRIM`) that the server
+  `NBD_CMD_WRITE_ZEROES` and `NBD_CMD_TRIM`) that the server
   completes (i.e. replies to) prior to processing to a
   `NBD_CMD_FLUSH` MUST be written to non-volatile
   storage prior to replying to that `NBD_CMD_FLUSH`. This
-- 
2.9.3