Update transactions.rst
Corrected a grammatical error in "CodeIgniter's Approach to Transactions"
diff --git a/user_guide_src/source/database/transactions.rst b/user_guide_src/source/database/transactions.rst
index e9190e5..2e6d4b4 100644
--- a/user_guide_src/source/database/transactions.rst
+++ b/user_guide_src/source/database/transactions.rst
@@ -21,7 +21,7 @@
transactions. In most cases all that is required are two lines of code.
Traditionally, transactions have required a fair amount of work to
-implement since they demand that you to keep track of your queries and
+implement since they demand that you keep track of your queries and
determine whether to commit or rollback based on the success or failure
of your queries. This is particularly cumbersome with nested queries. In
contrast, we've implemented a smart transaction system that does all