fix spelling error: s/it's/its/

diff --git a/index.mdwn b/index.mdwn
index 53830a2d38dbbe06eae7fa93d0ae5ca4c00d5cff..9a09750b2e178250afa2406eb92d89afce258c04 100644 (file)
--- a/index.mdwn
+++ b/index.mdwn
@@ -102,7 +102,7 @@ Here are
 [source tar balls of notmuch releases](http://notmuchmail.org/releases/).
 
 We have a [buildbot](http://buildbot.notmuchmail.org/grid) (here's
-it's
+its
 [configuration](https://github.com/tomprince/buildbot-configs/tree/notmuch)).
 
 ## Bug-tracking and patches