Fix typo'd nfs_setfacl reference in nfs4_acl manpage

Thanks to Oliver Lee for the report.

Signed-off-by: J. Bruce Fields <bfields@redhat.com>

man/man5/nfs4_acl.5

@@ -318,5 +318,5 @@ This manpage was written by David Richter and J. Bruce Fields.
 Please send bug reports, feature requests, and comments to
 .RI < nfsv4@linux-nfs.org >.
 .SH SEE ALSO
-.BR nfs4_getfacl "(1), " nfs4_setacl (1), 
+.BR nfs4_getfacl "(1), " nfs4_setfacl (1), 
 .IR RFC3530 " (NFSv4.0), NFSv4.1 Minor Version Draft."