Fix typo in 'Coupling Changes' section

Change-Id: Ife08f72358e983932552411b7ba6a3241984cca5

sat.md

diff --git a/sat.md b/sat.md
index 9459dbc..231d77a 100644
--- a/sat.md
+++ b/sat.md
@@ -30,7 +30,7 @@
 ## 10:00 am Coupling Changes
 
 Topic based submission of multiple changes at once.  Sometimes this
-was has been referred to as atomic submit.
+has been referred to as atomic submit.
 
 [Slides](https://storage.googleapis.com/gerrit-talks/summit/2015/Coupling-Changes.pdf)