Set the greeting text of the page

async def _set_greeting_text(self):
        """
        Set the greeting text of the page
        """

        page = self.settings()

        if 'greeting' in page:
            await self._send_to_messenger_profile(page, {
                'greeting': page['greeting'],
            })

            logger.info('Greeting text set for page %s', page['page_id'])