title: Override Checkout complete page in drupal commerce
body: <p>I want to change the content of the checkout complete page in drupal commerce but not able to figure out where to change .I am not able to find the hook_form_alter for this , someone please guide me and help me in updating the content of the checkout page.</p>
  
  <p>i.e Page where it says your order number is XYZ....</p>