doc: small update

Lower-case dnstap in the readme and update Makefile.release to point to
the new website.

Makefile.release

@@ -5,8 +5,9 @@
 # uploaded to github (after some sanity checks).
 #
 # The release should be accompanied by release notes published on
-# blog.coredns.io. For example:
-# https://blog.coredns.io/2016/09/18/coredns-001-release/
+# coredns.io. For example:
+# https://coredns.io/2016/09/18/coredns-001-release/
+# Also send an email to coredns-discuss@ to announce the new version.
 #
 # We use https://github.com/progrium/gh-release to automate github stuff
 # be sure to have that binary in your path.
@@ -16,9 +17,6 @@
 # git log --pretty=format:'%an' v001..master | sort -u
 # (where v001 is the previous release, obviously you'll need to adjust this)
 #
-# Side note: check if MAINTAINERS need an update with `git shortlog -s -n` and see if
-# someone has more than 5 (arbitrary number).
-#
 # Steps:
 # * Get an access token: https://help.github.com/articles/creating-an-access-token-for-command-line-use/
 # * export GITHUB_ACCESS_TOKEN=<token>

middleware/dnstap/README.md

-# Dnstap
+# dnstap
 
 *dnstap* enables logging to dnstap, a flexible, structured binary log format for DNS software: http://dnstap.info.