remove trailing whitespace

docs/reference/hooks.rst

@@ -478,9 +478,9 @@ Hooks for customising the way users are directed through the process of creating
         return HttpResponse("Congrats on making content!", content_type="text/plain")
 
   If you set attributes on a ``Page`` object, you should also call ``save_revision()``, since the edit and index view pick up their data from the revisions table rather than the actual saved page record.
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   .. code-block:: python
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       @hooks.register('after_create_page')
       def set_attribute_after_page_create(request, page)
          page.title = 'Persistent Title'