Fix indentation in docs

This commit fixes indentation in tempest docs. These indentations are
not necessary and it causes a weird html outputs.

Change-Id: I9c8714558a3327b7ad0b0ab0d3fdc7e770c3c75b
diff --git a/REVIEWING.rst b/REVIEWING.rst
index 5e08a6b..766d0c6 100644
--- a/REVIEWING.rst
+++ b/REVIEWING.rst
@@ -121,8 +121,8 @@
 
 When to approve
 ---------------
- * Every patch needs two +2s before being approved.
- * Its ok to hold off on an approval until a subject matter expert reviews it
- * If a patch has already been approved but requires a trivial rebase to merge,
-   you do not have to wait for a second +2, since the patch has already had
-   two +2s.
+* Every patch needs two +2s before being approved.
+* Its ok to hold off on an approval until a subject matter expert reviews it
+* If a patch has already been approved but requires a trivial rebase to merge,
+  you do not have to wait for a second +2, since the patch has already had
+  two +2s.