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/doc/source/write_tests.rst b/doc/source/write_tests.rst
index 5a2876e..49af95a 100644
--- a/doc/source/write_tests.rst
+++ b/doc/source/write_tests.rst
@@ -36,12 +36,12 @@
 In standard unittest the lifecycle of a TestCase can be described in the
 following phases:
 
- #. setUpClass
- #. setUp
- #. Test Execution
- #. tearDown
- #. doCleanups
- #. tearDownClass
+#. setUpClass
+#. setUp
+#. Test Execution
+#. tearDown
+#. doCleanups
+#. tearDownClass
 
 setUpClass
 ----------
@@ -54,10 +54,10 @@
 To accomplish this you do **not** define a setUpClass function, instead there
 are a number of predefined phases to setUpClass that are used. The phases are:
 
- * skip_checks
- * setup_credentials
- * setup_clients
- * resource_setup
+* skip_checks
+* setup_credentials
+* setup_clients
+* resource_setup
 
 which is executed in that order. Cleanup of resources provisioned during
 the resource_setup must be scheduled right after provisioning using
@@ -65,7 +65,7 @@
 are executed in reverse order during tearDownClass, before the cleanup of
 test credentials takes place. An example of a TestCase which defines all
 of these would be::
-  
+
   from tempest.common import waiters
   from tempest import config
   from tempest.lib.common.utils import test_utils