Fixes #38335 - Document Ansible Diff Mode template option

Author: bnerickson

guides/common/modules/proc_creating-a-job-template.adoc

@@ -32,6 +32,13 @@ endif::[]
 ifdef::satellite[]
 For more information on Ansible check mode, see {RHDocsBaseURL}red_hat_ansible_automation_platform/latest/html-single/using_automation_execution/index[Using automation execution] in _Red{nbsp}Hat Ansible Automation Platform documentation_.
 endif::[]
+.. Select *Enable Ansible Diff Mode* to run jobs based on the template in Ansible diff mode, which reports detailed changes Ansible tasks make _if_ the underlying Ansible modules supports Ansible diff mode.  If a module does not support Ansible diff mode, then the parent task will only report that a change occurred and nothing else.  When used in conjunction with Ansible check mode, the Ansible playbook tasks report changes they _would_ have made to the host, and no changes are made to the host.  Please note that if a task is used to deploy credentials and the task supports Ansible diff mode, then changes to the credentials _may_ be reported in clear text.  This can be mitigated by adding `diff: false` or `no_log: true` to the task in question which will prevent change reports for that task.
+ifndef::satellite[]
+For more information on Ansible diff mode, see link:https://docs.ansible.com/ansible/latest/playbook_guide/playbooks_checkmode.html[Validating tasks: check mode and diff mode] in _Ansible Documentation_.
+endif::[]
+ifdef::satellite[]
+For more information on Ansible diff mode, see {RHDocsBaseURL}red_hat_ansible_automation_platform/latest/html-single/using_automation_execution/index[Using automation execution] in _Red{nbsp}Hat Ansible Automation Platform documentation_.
+endif::[]
 . Click the *Location* tab and add the locations where you want to use the template.
 . Click the *Organizations* tab and add the organizations where you want to use the template.
 . Click *Submit* to save your changes.