changed the var to caps

Author: Amrita

modules/migration-writing-ansible-playbook-hook.adoc

@@ -76,12 +76,12 @@ The `MigPlan` CR name and migration namespaces are passed as environment variabl
   gather_facts: false
   tasks:
   - set_fact:
-      namespaces: "{{ (lookup( 'env', 'migration_namespaces')).split(',') }}"
+      namespaces: "{{ (lookup( 'env', 'MIGRATION_NAMESPACES')).split(',') }}"
 
   - debug:
       msg: "{{ item }}"
     with_items: "{{ namespaces }}"
 
   - debug:
-      msg: "{{ lookup( 'env', 'migplan_name') }}"
+      msg: "{{ lookup( 'env', 'MIGRATION_PLAN_NAME') }}"
 ----