VMware: Update example (#43786)

* Unified examples in all modules
* validate_certs is now 'no' instead of 'False'
* delegate_to changes

Signed-off-by: Abhijeet Kasurde <akasurde@redhat.com>

lib/ansible/modules/cloud/vmware/vmware_maintenancemode.py

@@ -70,10 +70,10 @@ extends_documentation_fragment: vmware.documentation
 EXAMPLES = '''
 - name: Enter VSAN-Compliant Maintenance Mode
   vmware_maintenancemode:
-    hostname: vc_host
-    username: vc_user
-    password: vc_pass
-    esxi_hostname: esxi.host.example
+    hostname: "{{ vcenter_hostname }}"
+    username: "{{ vcenter_username }}"
+    password: "{{ vcenter_password }}"
+    esxi_hostname: "{{ esxi_hostname }}"
     vsan: ensureObjectAccessibility
     evacuate: yes
     timeout: 3600