message: Update docs/howto.md with single backticks
diff: @@ -18,7 +18,7 @@ is formatted as https://discordapp.com/channels/``guildid``/``channelid``
  * ``npm run adminme -- -r '!AbcdefghijklmnopqR:example.com' -u '@Alice:example.com' -p '100'``
  * Run ``npm run adminme -- -h`` for usage.
  -Please note that ``'!AbcdefghijklmnopqR:example.com'`` is the internal room id and will always begin with ``!``.
  +Please note that `!AbcdefghijklmnopqR:example.com` is the internal room id and will always begin with `!`.
  You can find this internal id in the room settings in Riot.
  ### Migrate to postgres from sqlite
  