Update docs

docs/version_locking.rst

@@ -1,31 +1,38 @@
 .. _locking-versions:
 
-****************
 Locking versions
-****************
+================
 
 Explanation
 -----------
-The lock versions setting is intended to modify the way djangocms-versioning works in the following way:
+
+The lock versions setting is intended to modify the way djangocms-versioning works in
+the following way:
 
 - A version is **locked to its author** when a draft is created.
 - The lock prevents editing of the draft by anyone other than the author.
 - That version becomes automatically unlocked again once it is published.
 - Locks can be removed by a user with the correct permission (``delete_versionlock``)
 - Unlocking an item sends an email notification to the author to which it was locked.
-- Manually unlocking a version does not lock it to the unlocking user, nor does it change the author.
-- The Version admin view for each versioned content-type shows lock icons and offers unlock actions
+- Manually unlocking a version does not lock it to the unlocking user, nor does it
+  change the author.
+- The Version admin view for each versioned content-type shows lock icons and offers
+  unlock actions
 
 Activation
 ----------
-In your project's ``settings.py`` add::
 
-    DJANGOCMS_VERSIONING_LOCK_VERSIONS = True
+In your project's ``settings.py`` add:
 
+.. code-block::
 
+    DJANGOCMS_VERSIONING_LOCK_VERSIONS = True
 
 Email notifications
-------------------------
-Configure email notifications to fail silently by setting::
+-------------------
+
+Configure email notifications to fail silently by setting:
+
+.. code-block::
 
     EMAIL_NOTIFICATIONS_FAIL_SILENTLY = True