Fix a doc indentation bug.

Change-Id: I42ca63baa414e6bd6ccc1ab30ed697b09c18d0a6
diff --git a/tempest/README.rst b/tempest/README.rst
index 892b0f8..8f07a07 100644
--- a/tempest/README.rst
+++ b/tempest/README.rst
@@ -12,13 +12,13 @@
 and guidelines. Below is the proposed Havana restructuring for Tempest
 to make this clear.
 
-tempest/
-   api/ - API tests
-   cli/ - CLI tests
-   scenario/ - complex scenario tests
-   stress/ - stress tests
-   thirdparty/ - 3rd party api tests
-   whitebox/ - white box testing
+| tempest/
+|    api/ - API tests
+|    cli/ - CLI tests
+|    scenario/ - complex scenario tests
+|    stress/ - stress tests
+|    thirdparty/ - 3rd party api tests
+|    whitebox/ - white box testing
 
 Each of these directories contains different types of tests. What
 belongs in each directory, the rules and examples for good tests, are