Minor documentation update:

 - remove duplication of dependency information (it's all in INSTALL).
 - SSHFP is now an RFC.
diff --git a/INSTALL b/INSTALL
index 49013e9..23bcf38 100644
--- a/INSTALL
+++ b/INSTALL
@@ -252,7 +252,7 @@
 
 Replacing /etc/ssh with the correct path to the configuration directory.
 (${prefix}/etc or whatever you specified with --sysconfdir during
-configuration)
+configuration).
 
 If you have configured OpenSSH with EGD support, ensure that EGD is
 running and has collected some Entropy.