Revise visualisation documentation for Plotly charts, Matplotlib

[stichbury]

This PR is now ready for review.

Description

Resolves #1949

I've made some improvements to the docs for Kedro-Viz in the "Visualisation with Kedro-Viz" section:

• Readability changes in the pages that introduce kedro viz and plotly reporting
• Improvements to use the spaceflights starter (a recent change pulled it out of the main spaceflights tutorial, this was a tidy-up to explain how to use plotly reporting by adding it on top of the starter code)
• Minor changes in experiment tracking, since that will be covered more comprehensively by a separate issue
• New screen shots for plotly charts

You can see the files changed here: https://stichbury.github.io/

It's probably easier to review the built HTML instead of the diffs but any feedback would be appreciated. Since we released 18.4 i've tried to rebuild the example and now I cannot get the chart to show in viz. I've also updated my Mac OS to the latest version and I've no idea which of those changes (or something else) has broken the charts.

Tested on Chrome & Safari.

Checklist

• Read the contributing guidelines
• Opened this PR as a 'Draft Pull Request' if it is work-in-progress
• Updated the documentation to reflect the code changes
• Added a description of this change in the RELEASE.md file
• Added tests to cover my changes

[merelcht]

I like these improvements!

I just left a comment about the repeated node name for the compare_passenger_capacity function.

[merelcht]

This looks great @stichbury ! And good thinking on adding a note about this working up to Kedro 0.18.3 👍

[rashidakanchwala]

Look's great to me. thanks @stichbury

[yetudada]

The revisions to this documentation are sorely needed! Thanks for leading this @stichbury! I've left some comments on structure, user-friendliness and minor formatting.