Bad host format in python client library doc

Possible JS/regex bug
> The error grpc+tcp://localhost:8181:443 suggests an invalid URI where two ports are specified(:443 and :8181). I'm not sure if the following would work:
client = InfluxDBClient3(host="localhost", port=8181)

[Slack Message](https://influxdata.slack.com/archives/D07E8EJ3YRF/p1753440217246759)

Start by checking the Python client documentation containing the InfluxDBClient3(host="localhost", port=8181) example and review the linked Discord and Slack reports for context. Determine whether the documented host format produces the duplicated-port URI; done means the documentation and example accurately describe a valid host and port configuration.

Written by the indexing model from the issue text.