ipa_getkeytab: Fix example task (#9104)

Fix ipa_getkeytab example task

plugins/modules/ipa_getkeytab.py

@@ -98,11 +98,9 @@ extends_documentation_fragment:
 '''
 
 EXAMPLES = r'''
-- name: Get kerberos ticket
+- name: Get Kerberos ticket using default principal
-  ansible.builtin.shell: kinit admin
+  community.general.krb_ticket:
-  args:
+    password: "{{ aldpro_admin_password }}"
-    stdin: "{{ aldpro_admin_password }}"
-  changed_when: true
 
 - name: Create keytab
   community.general.ipa_getkeytab: