Fix typo

tran_log_format to tranlogformat

Change-Id: I2a181ef4f9742e5f476e13dde9254a81c2d85e2d
diff --git a/README.rst b/README.rst
index dd7befd..93879b8 100644
--- a/README.rst
+++ b/README.rst
@@ -71,7 +71,7 @@
       logging:
         message_decoder: DEBUG
       outofprocess:
-        tran_log_format: "%u|%a|%s|%SP|%IDP|%t|%b|%ac|%attr|%E|%e|%S|%SS|%SM|%URI|%URL|%UA|%app|%p|%n|%D|%d|%I|%II"
+        tranlogformat: "%u|%a|%s|%SP|%IDP|%t|%b|%ac|%attr|%E|%e|%S|%SS|%SM|%URI|%URL|%UA|%app|%p|%n|%D|%d|%I|%II"
 
 
 Override IdP metadata from file