Fix compatable typo (yet to add to codespell)

=== Do not change lines below ===
{
 "chain": [],
 "cmd": "git-sedi compatable compatible",
 "exit": 0,
 "extra_inputs": [],
 "inputs": [],
 "outputs": [],
 "pwd": "."
}
^^^ Do not change lines above ^^^

doc/devblog/day_24__nearly_done_with_gcrypt.mdwn

@@ -13,7 +13,7 @@ about the new remote yet, and crashed (and was restarted knowing about it,
 so successfully sent any other files). So got sidetracked on fixing that.
 
 Also did some work to make the gpg bundled with git-annex on OSX be
-compatable with the config files written by MacGPG. At first I was going to
+compatible with the config files written by MacGPG. At first I was going to
 hack it to not crash on the options it didn't support, but it turned out
 that upgrading to version 1.4.14 actually fixed the problem that was making
 it build without support for DNS.

doc/devblog/day_426__grab_bag.mdwn

@@ -40,7 +40,7 @@ complicate it, and the hidden service side would need to listen on a unix
 socket, instead of the regular http port. It might be worth it to use http
 for tor, if it could be reused for git-annex http servers not on the tor
 network. But, then I'd have to make the http server support git pull and
-push over http in a way that's compatable with how git uses http, including
+push over http in a way that's compatible with how git uses http, including
 authentication. Which is a whole nother ball of complexity. So, I'm leaning
 instead to using a simple custom protocol something like: