module_formatter: .rst now correctly handles code examples

- fixed template (it was the template), adding indentation with Jinja2
 - added description of code examples to man-page template (was missing)
 - fixed fireball, cron, and debug module examples to confrom

hacking/templates/man.j2

@@ -46,6 +46,10 @@
 .SH EXAMPLES
 {% for e in examples %}
 .PP
+{% if e['description'] %}
+@{ e['description'] | jpfunc }@
+{% endif %}
+
 .nf
 @{ e['code'] }@
 .fi

hacking/templates/rst.j2

@@ -45,9 +45,11 @@
 
 {% for example in examples %}
     {% if example['description'] %}<p>@{ example['description'] | html_ify }@</p>{% endif %}
-    <p><pre>
-    @{ example['code'] }@
-    </pre></p>
+    <p>
+    <pre>
+@{ example['code'] | indent(4, True) }@
+    </pre>
+    </p>
 {% endfor %}
     <br/>