message: improve formatting in README.md
diff: @@ -12,8 +12,8 @@ Installation of the grafana front-end (can be on any *host* system with connecti
  1. Make sure curl and docker are installed on the *host*
  2. In PCM source directory on the *host*: `cd grafana`
  3. (Download once and) start docker containers on the *host*: `sh start.sh http://target_system_address:9738`
  - - start.sh script starts telegraf/influxdb/grafana containers
  - - start-prometheus.sh is an alternative script which starts prometheus + grafana containers: `sh start-prometheus.sh target_system_address:9738`
  + - `start.sh` script starts telegraf/influxdb/grafana containers
  + - `start-prometheus.sh` is an alternative script which starts prometheus + grafana containers: `sh start-prometheus.sh target_system_address:9738`
  4. Start your browser at http://*host*:3000/ and then login with admin user, password admin . Change the password and then click on "**Home**" (left top corner) -> "Processor Counter Monitor (PCM) Dashboard"
  5. You can also stop and delete the containers when needed: `sh stop.sh`
  