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

cron

@@ -101,7 +101,7 @@ options:
 examples:
    - code: cron name="check dirs" hour="5,2" job="ls -alh > /dev/null"
      description: Ensure a job that runs at 2 and 5 exists. Creates an entry like "* 5,2 * * ls -alh > /dev/null"
-   - code: name="an old job" cron job="/some/dir/job.sh" state=absent
+   - code: cron name="an old job" cron job="/some/dir/job.sh" state=absent
      description: 'Ensure an old job is no longer present. Removes any job that is preceded by "#Ansible: an old job" in the crontab'
 requirements: cron
 author: Dane Summers

debug

@@ -48,7 +48,7 @@ options:
     required: false
     default: "no"
 examples:
-    - code:
+    - code: |
         - local_action: debug msg="System $inventory_hostname has uuid $ansible_product_uuid"
         - local_action: debug msg="System $inventory_hostname lacks a gateway" fail=yes
           only_if: "is_unset('${ansible_default_ipv4.gateway}')"

fireball

@@ -51,7 +51,6 @@ examples:
                  sudo: yes
                  tasks:
                      - action: fireball 
-
            - hosts: devservers
                  connection: fireball
                  tasks: