Review fixes

mass_mailing_custom_unsubscribe/README.rst

@@ -17,10 +17,11 @@ and add a 'mass_mailing.unsubscribe.label' parameter with html to set at bottom
 of mass emailing emails. Including '%(url)s' variable where unsubscribe link
 
 For example:
-```
+
+.. code:: html
+
   <small>You can unsubscribe <a href="%(url)s">here</a></small>
 
-```
 
 Additionally, you can disable this link if you set this parameter to 'False'
 
@@ -41,15 +42,15 @@ Known issues / Roadmap
 ======================
 
 * This custom html is not translatable, so as a suggestion, you can define
-the same text in several languages in several lines. For example:
+  the same text in several languages in several lines.
 
 For example:
-```
+
+.. code:: html
+
   <small>[EN] You can unsubscribe <a href="%(url)s">here</a></small><br/>
   <small>[ES] Puedes darte de baja <a href="%(url)s">aquí</a></small>
 
-```
-
 
 Bug Tracker
 ===========