title: How to remove the cause of an unexpected indentation warning when generating code documentation?
body: <p>The documentation code with the problem is at the beginning of a method:</p>
  
  <pre><code>"""
  Gtk.EventBox::button-release-event signal handler.
  :param widget: The clicked widget (The Gtk.EventBox).
  :param event: Gdk.EventButton object with information regarding
         the event.
  :param user_data: The Gtk.LinkButton that should be opened when
         the Gtk.EventBox is clicked.
  :return: None
  """
  </code></pre>
  
  <p>The warnings are:</p>
  
  <pre><code>C:/msys64/home/hope/python+gtk/test/main.py:docstring of main.Builder.advertisem
  ent_clicked:4: WARNING: Unexpected indentation.
  C:/msys64/home/hope/python+gtk/test/main.py:docstring of main.Builder.advertisem
  ent_clicked:5: WARNING: Block quote ends without a blank line; unexpected uninde
  nt.
  </code></pre>
  
  <p>What can be done to remove these warnings and their cause(s)?</p>