DCD-224: Minor typos and comments.

aws_jira_dc_node.yml

@@ -3,6 +3,7 @@
   become: true
 
   vars:
+    # See group_vars/aws_node_local.yml, which pull vars from the environment.
     atl_product_family: "jira"
     atl_product_user: "jira"
     atl_product_edition: "jira-{{ lookup('env', 'ATL_PRODUCT_EDITION') | lower }}"

roles/product_install/tasks/product_download.yml

@@ -1,6 +1,6 @@
 ---
 
-- name: Create installation directories if necesary
+- name: Create installation directories if necessary
   include_tasks: "create_dirs.yml"
 
 - name: Check for and load cached version