Update our kedro-telemetry documentation on which data is collected

[yetudada]

Description

I was poking around on the kedro-telemetry README.md and realised the table which shows which data we collect is out of date. It's missing fields like username, project size (#44) and even notes on tools used. Additionally, we should mention that Kedro-Viz UI interactions are captured too.

Context

We should be transparent on all information we collect about our users. This task just requires getting the most accurate view of the information kedro-telemetry pulls and updating the table.

[astrojuanlu]

Also, it mentions hostname, but hostname hashing was removed in #58

[stichbury]

See further information on #509 about the location of updates and additional task to fix a broken link in https://github.com/kedro-org/kedro-plugins/tree/main/kedro-telemetry#privacy-notice

[astrojuanlu]

For the record,

I think it would make sense to have a better coverage of telemetry in the main docs (this could be in the plugins section perhaps) and link that through to the README.

(from #509)

cc @DimedS

[astrojuanlu]

We were advised that the text should indicate clearly that

1. We are not collecting any personal data
2. The data is collected with the purpose of understanding and improving the product, never for marketing or promotional purposes

For now there are some examples in #510 (comment), if I find a better template we can use I'll paste it here.

[astrojuanlu]

Reopening this until we merge kedro-org/kedro#3603