chore: Update headings as per edX guidelines

Author: farhan

Diff for: docs/xblock-utils/index.rst

@@ -1,29 +1,25 @@
 .. _XBlock Utils:
 
 
-############
 Xblock.utils
 ############
 
-********************************************
 Package having various utilities for XBlocks
 ********************************************
 
 
-=======
 Purpose
 =======
 
 ``xblock/utils`` package contains a collection of utility functions and base test classes that are useful for any XBlock.
 
 
-==============
 Documentation
-==============
+=============
 
 
 StudioEditableXBlockMixin
-*************************
+-------------------------
 
 .. code:: python
 
@@ -119,7 +115,7 @@ Supported field options (all field types):
 Basic screenshot: |Screenshot 1|
 
 StudioContainerXBlockMixin
-**************************
+-------------------------
 
 .. code:: python
 
@@ -138,7 +134,7 @@ An example is the mentoring XBlock: |Screenshot 2|
 
 
 child\_isinstance
-*****************
+-------------------------
 
 .. code:: python
 
@@ -164,13 +160,13 @@ orders of magnitude faster.
 .. |Screenshot 2| image:: Images/Screenshot_2.png
 
 XBlockWithSettingsMixin
-***********************
+-------------------------
 
 This mixin provides access to instance-wide XBlock-specific configuration settings.
 See :ref:`accessing-xblock-specific-settings` for details.
 
 ThemableXBlockMixin
-*******************
+-------------------------
 
 This mixin provides XBlock theming capabilities built on top of XBlock-specific settings.
 See :ref:`theming-support` for details.

Diff for: docs/xblock-utils/settings-and-theme-support.rst

@@ -1,13 +1,11 @@
 .. _settings-and-theme-support:
 
 
-##########################
 Settings and theme support
 ##########################
 
 .. _accessing-xblock-specific-settings:
 
-**********************************
 Accessing XBlock specific settings
 **********************************
 
@@ -36,7 +34,6 @@ mutable settings. Both ``SettingsService`` and
 bucket and return them as is. Refer to the ``SettingsService`` docstring
 and implementation for more details.
 
-=============================
 Using XBlockWithSettingsMixin
 =============================
 
@@ -60,7 +57,6 @@ settings key is not found) ``default`` value is used.
 
 .. _theming-support:
 
-***************
 Theming support
 ***************
 
@@ -117,7 +113,6 @@ belonging to a theme with a global CSS selector
 not automatically added by ``ThemableXBlockMixin``, so one needs to add
 it manually.
 
-=========================
 Using ThemableXBlockMixin
 =========================