Add more linting fixes

roles/node_exporter/molecule/default/verify.yml

@@ -4,13 +4,13 @@
   hosts: all
   gather_facts: false
   any_errors_fatal: true
-  
+
   tasks:
     - name: "Sanity check the node exporter"
       retries: 5
       delay: 1
-      register: result
-      failed_when: '"node_exporter_build_info" not in result.content'
+      register: node_exporter_check
+      failed_when: '"node_exporter_build_info" not in node_exporter_check.content'
       ansible.builtin.uri:
         url: "http://localhost:9100/metrics"
         return_content: true