Expand on tutorials for biologist focused understanding

[d33bs]

Description

This PR expands on existing tutorial documentation to help make CytoTable more biologist friendly for understanding.

What is the nature of your change?

• Bug fix (fixes an issue).
• Enhancement (adds functionality).
• Breaking change (fix or feature that would cause existing functionality to not work as expected).
• This change requires a documentation update.

Checklist

Please ensure that all boxes are checked before indicating that a pull request is ready for review.

• I have read the CONTRIBUTING.md guidelines.
• My code follows the style guidelines of this project.
• I have performed a self-review of my own code.
• I have commented my code, particularly in hard-to-understand areas.
• I have made corresponding changes to the documentation.
• My changes generate no new warnings.
• New and existing unit tests pass locally with my changes.
• I have added tests that prove my fix is effective or that my feature works.
• I have deleted all non-relevant text in this pull request template.

[jenna-tomkinson]

LGTM but I highly recommend double checking the tutorials for accuracy before merging! Otherwise it looks very good!

[d33bs]

Thank you @jenna-tomkinson for your review!