Feature/sdk usage basics webpage tidy

[MarkBenjamin]

Description

• Summary of the change / bug fix tidies up some of the source code for the sdk usage basics page (fix typo/s, adjust spurious 'syntax' highlighting, 'allow' jupyter commands)
• Link # issue, if applicable.
• Screenshot of the feature or the bug before/after fix, if applicable.
• Relevant motivation and context a small pull request as practice before working on a feature request
• List any dependencies that are required for this change.

How has this been tested?

• Please describe the tests that you ran to verify your changes.
• Provide instructions so we can reproduce.
• Please also list any relevant details for your test configuration.

• Make sure affected commands still run in terminal
• Ensure the SDK still works
• Check any related reports

Checklist:

• I have adhered to the GitFlow naming convention and my branch name is in the format of feature/feature-name or hotfix/hotfix-name.
• Update our documentation following these guidelines. Update any user guides that are affected by the changes.
• Update our tests following these guidelines.
• Make sure you are following our CONTRIBUTING guidelines.
• If a feature was added make sure to add it to the corresponding integration test script.

Others

• I have performed a self-review of my own code.
• I have commented my code, particularly in hard-to-understand areas.

[deeleeramone]

Thanks!