Fix typo.

Fix typo.

diff --git a/README.md b/README.md
index 962be38..e8f9f21 100644
--- a/README.md
+++ b/README.md
@@ -75,7 +75,7 @@ end
 
 #### `RAILS_DB` Environment Variable
 
-When working with a Rails application, you can specify that DB that you'll like to work with by specifying the `RAILS_DB` ENV variable.
+When working with a Rails application, you can specify the DB that you'll like to work with by specifying the `RAILS_DB` ENV variable.
 
 `‍``
 # config/multisite.yml

GitHub sha: 100ffecc