[Libguestfs] [nbdkit PATCH] maint: Mention upstream NBD in README

[Eric Blake]

It's worth having a link to the upstream NBD protocol as part
of README.

Fix a typo while at it.

Signed-off-by: Eric Blake <eblake at redhat.com>
---
 README | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/README b/README
index 7b5de90..7806cf5 100644
--- a/README
+++ b/README
@@ -11,7 +11,7 @@ The key features are:
   libraries or included in proprietary code.

 * Well-documented, simple plugin API with a stable ABI guarantee.
-  Let's you export "unconventional" block devices easily.
+  Lets you export "unconventional" block devices easily.

 * You can write plugins in C, Perl, Python, OCaml or Ruby.

@@ -154,3 +154,4 @@ https://www.redhat.com/mailman/listinfo/libguestfs

 For further information, see:
 http://libguestfs.org/
+https://github.com/NetworkBlockDevice/nbd/blob/master/doc/proto.md
-- 
2.13.6