Add raw tags to step 3 playbook and remove duplicate yaml header

Author: zjpeterson

exercises/ansible_rhel/1.6-templates/README.md

@@ -59,9 +59,10 @@ Utilize the `ansible.builtin.template` module in a playbook to distribute and re
 
 Modify the `system_setup.yml` Playbook with the following content:
 
+{% raw %}
+
 ```yaml
 ---
----
 - name: Basic System Setup
   hosts: all
   become: true
@@ -121,6 +122,8 @@ Modify the `system_setup.yml` Playbook with the following content:
         state: reloaded
 ```
 
+{% endraw %}
+
 The `ansible.builtin.template` module takes the `motd.j2` template and generates an `/etc/motd` file on each host, filling in the template's placeholders with the actual host facts.
 
 ### Step 4 - Executing the Playbook