I have a simple method to return HTML text to a field.Html but get always unwanted character on each line:

# call:
 self.agenda = self._meeting_type_agenda(self.meeting_type)

@api.one  # Getting the default text for agendas depending on Meeting-type
def _meeting_type_agenda(self, meeting_type):
  if meeting_type == "daily": # Daily Scrum Agenda
      return str("""<h3 style="color:blue">What did I do yesterday that helped the Development Team meet the Sprint Goal?</h3>
      <ul>
      <li>-</li> <li>-</li>
      </ul><h3 style="color:blue">What will I do today to help the Development Team meet the Sprint Goal?</h3>
      <ul>
      <li>-</li>
      <li>-</li>
      </ul><h3 style="color:blue">Do I see any impediment that prevents me or the Development Team from meeting the Sprint Goal?</h3>
      """)
  elif meeting_type == "planning": # Planning Agenda
      return """
      <h3 style="color:blue"><ul>What is the goal of this sprint?</ul></h3>
      <ul>
      <li>-<br></li>
      <li>-<br></li></ul><br/>
      <h3 style="color:blue"><ul>Which tasks does it include?</ul></h3>
      <ul>
      <li>-<br></li>
      <li>-<br></li>
      </ul><br/>
      <h3 style="color:blue"><ul>Which Def. of Done does it include?</ul></h3><br/>
      """

What is worn or missing?