Second HELP line forMultiple help for metric name "mktxp_system_identity_info"

[gimli2]

When multiple hosts configured, the prometheus export issues duplicate lines with HELP message:
# HELP mktxp_system_identity_info System identity

which confuses the telegraf, when grabbing these metrics:
[inputs.prometheus] Error in plugin: error reading metrics for "http://localhost:49090/metrics": decoding response failed: text format parsing error in line 195: second HELP line for metric name "mktxp_system_identity_info"

Regarding the prometheus docs: Only one HELP line may exist for any given metric name.

Therefore IMHO the mktxp should output only one HELP line in metrics export, when multiple host are configured and the metric line mktxp_system_identity_info differ only by label values.