Trivial fix style in document

Make the underline match the title

Change-Id: I01a0ce6d6016100ecde11022b915ce1bc0ac0ecd

doc/source/cross-testing.rst

@@ -1,6 +1,6 @@
-============================
- Cross-project Unit Testing
-============================
+==========================
+Cross-project Unit Testing
+==========================
 
 Libraries in OpenStack have an unusual ability to introduce breaking
 changes. All of the projects are run together from source in one form

doc/source/debugging.rst

@@ -1,6 +1,6 @@
-=================
- Debugging Tests
-=================
+===============
+Debugging Tests
+===============
 
 Running tests through testrepository_ makes it difficult to use pdb for
 debugging them. oslotest includes ``oslo_debug_helper`` to make using

doc/source/features.rst

@@ -1,6 +1,6 @@
-==========
- Features
-==========
+========
+Features
+========
 
 Debugging with oslo_debug_helper
 ================================

doc/source/index.rst

@@ -1,6 +1,6 @@
-=======================================================
- oslotest -- OpenStack Testing Framework and Utilities
-=======================================================
+=====================================================
+oslotest -- OpenStack Testing Framework and Utilities
+=====================================================
 
 .. toctree::
    :maxdepth: 2

doc/source/resources.rst

@@ -1,6 +1,6 @@
-========================
- Other Useful Resources
-========================
+======================
+Other Useful Resources
+======================
 
 * Mock_ library documentation
 * OpenStack Bootstrapping Hour: Mock Best Practices: `video

doc/source/testing.rst

@@ -1,6 +1,6 @@
-=========
- Testing
-=========
+=======
+Testing
+=======
 
 Cross-testing With Other Projects
 =================================