Updated FAQ (markdown)

FAQ.md

@@ -63,7 +63,9 @@ See <https://github.com/42wim/matterbridge/wiki/Discord-bot-setup#privileged-gat
 See <https://github.com/42wim/matterbridge/issues/1263> for more info
 
 # Telegram 
+
 ## Matterbridge is not relaying messages from Telegram
+
 See 
 * https://core.telegram.org/bots#privacy-mode
 * https://github.com/yagop/node-telegram-bot-api/issues/174#issuecomment-244632667
@@ -81,17 +83,24 @@ Disable privacy mode with @Botfather.
 The order is important.
 
 ## Matterbridge is not relaying images/stickers/files from Telegram
+
 Because images/stickers/files are from non-public url's, you'll need to setup a [mediaserver](Mediaserver-setup-(advanced))
 
 ## Matterbridge is not relaying messages to Telegram
+
 Did you enable `MessageFormat="HTML"` in your config?  
 You could be sending invalid HTML. Set it to `MessageFormat=""`
 
 More info in https://github.com/42wim/matterbridge/blob/master/matterbridge.toml.sample#L836-L838
 
 ## Matterbridge is not deleting messages from Telegram to other bridges
+
 Telegram doesn't has "deleted messages" metadata, so we don't know which messages are deleted.
 
+## Users are shown as "unknown user"
+
+Telegram channels will always return unknown users. Telegram groups will show usernames if possible
+
 # Mattermost
 ## mattermost not sending to other bridges.
 Did you create a dedicated account for matterbridge?