Small error in instructions for writing to InfluxDB via Python

[MarkhamLee]

I noticed a small error in the "setting up python" instructions in the web UI, namely the sequence where you create the write_api object. The provided instructions read as follows:

write_client = influxdb_client.InfluxDBClient(url=url, token=token, org=org)
write_api = client.write_api(write_options=SYNCHRONOUS)

the second line should actually read:
write_api = write_client.write_api(write_options=SYNCHRONOUS)

I.e. 'write_client' instead of 'client'. A small issue, but I could see it throwing someone off for a bit

[MarkhamLee]

Just realized this is a duplicate/already covered by #6754