Fix node name and port in diagnostic_remote_logging README

[christophfroehlich]

There are some issues in the README, it took me some time to set everything up (in the end it worked fine!)

• the node name is different, resulting in the parameter yaml not being used
• yaml syntax forbids keys without values
• the telegraf input listener needs a different port if the influxdb still uses the default 8086

[ct2034]

@dwffls can you please look into this

[dwffls]

All these changes are indeed correct. Made some mistakes with the creation of the README.
So feel free to merge these!

@christophfroehlich Thanks for catching these, and happy to hear that the rest works fine for you!