fix: hide real char links from bots (#1254)

helpdeskbot/templates/messages/helpdeskbot_question_in_channel.html

@@ -1,4 +1,4 @@
-{% if question.room %}<a href="{{ room.chat_url }}"><b>{{ question.room }}</b></a>
+{% if question.room %}<a href="{{ room.get_private_url }}"><b>{{ question.room }}</b></a>
 
 {% endif %}<b>{{ question.title }}</b> от <a href="{{ settings.APP_HOST }}{% url "profile" user.slug %}">{{ user.full_name }}</a>