Update README documentation for GUI automation directory

Resolves: openbmc/openbmc-test-automation#2171
Change-Id: Ie6f152a5a162ba01965ff895228637586a0fd162
Signed-off-by: George Keishing <gkeishin@in.ibm.com>
diff --git a/README.md b/README.md
index 409c3a7..503f658 100644
--- a/README.md
+++ b/README.md
@@ -139,7 +139,7 @@
 
 `xcat/`: Contains test cases for XCAT automation.
 
-`gui/`: Contains test cases for testing web-based interface built on AngularJS.
+`gui/test/`: Contains test cases for testing web-based interface built on AngularJS.
 
 `gui/gui_test/`: Contains test cases for testing web-based user interface built on Vue.js.