try using html

app.py

@@ -73,7 +73,7 @@ def sendNotifSisurat():
     else:
         textNotif = createNotifSisurat(req_data)
         param = urllib.parse.urlencode({'chat_id': user.chatId, 'text': textNotif})
-        url = "https://api.telegram.org/bot" + TOKEN + "/sendMessage?" + param + "&parse_mode=markdown"
+        url = "https://api.telegram.org/bot" + TOKEN + "/sendMessage?" + param + "&parse_mode=HTML"
         r = requests.get(url = url) 
         return r.json()
 

telebot/sisuratNotif.py

 def createNotifSisurat(data):
     if (data['type'] == 0):
-        return  '#### Pengumuman Sisurat Fasilkom UI,\n**Judul Surat:** %s\n**Milik akun:** %s \n**Status:** Baru Diajukan.\nTerima Kasih,\nsurat.cs.ui.ac.id' % (data['judulSurat'], data['username'])
+        return  '''
+                <h4>Pengumuman Sisurat Fasilkom UI</h4>
+                <p><b>Judul Surat:</b> %s</p> 
+                <p><b>Milik akun:</b> %s</p>
+                <p><b>Status:</b> Baru Diajukan</p>
+                <p>Terima Kasih,</p>
+                <a href='surat.cs.ui.ac.id'>surat.cs.ui.ac.id</a>
+                ''' % (data['judulSurat'], data['username'])
     elif (data['type'] == 1):
         return  '''
                 Pengumuman Sisurat Fasilkom UI,\n