docs(installing): fix typo in load balancers doc

Author: mboersma

docs/installing_deis/configure-load-balancers.rst

@@ -25,7 +25,7 @@ If you want to configure SSL termination on your load balancer, see :ref:`ssl-en
 
 A health check should be configured on the load balancer to send an HTTP request to /health-check at
 port 80 on all nodes in the Deis cluster. The health check endpoint returns an HTTP 200. This enables
-the load balancer to serve trafic to whichever hosts happen to be running the deis-router component
+the load balancer to serve traffic to whichever hosts happen to be running the deis-router component
 at any moment.
 
 EC2