Update docs part two

[Marinovsky]

Description

In this PR the response and request documentation from the following endpoints was updated:

• live/create
• live/read (list)
• live/read/orders
• live/read/log
• live/update/liquidate
• live/update/stop

It's worth to mention that the endpoint live/create couldn't be tested with the brokerages: Oanda, Samco, Zerodha, TDAmeritrade and IEXCloud since they didn't provide paper credentials for testing.

Related Issue

N/A

Motivation and Context

With this change the API docs related with LEAN live endpoints will be updated

Types of changes

• [ ] Bug fix (non-breaking change which fixes an issue)
• [ ] Refactor (non-breaking change which improves implementation)
• [ ] New feature (non-breaking change which adds functionality)
• [x] Non-functional change (xml comments/documentation/etc)

Checklist:

• [x] My code follows the code style of this project.
• [x] I have read the CONTRIBUTING document.
• [x] My branch follows the naming convention bug-<issue#>-<description> or feature-<issue#>-<description>