Fix typo in the Scatter3D constructor documentation

[kpister]

This is a documentation change in the code section, so I am not sure which of the following apply.

Documentation PR

• I've seen the doc/README.md file
• This change runs in the current version of Plotly on PyPI and targets the doc-prod branch OR it targets the master branch

Code PR

• I have read through the contributing notes and understand the structure of the package. In particular, if my PR modifies code of plotly.graph_objects, my modifications concern the codegen files and not generated files.

[kpister]

The typo is minor, but it ruins formatting on VSCode documentation hints since it inverts all the "code/not code" formatted sections.

[LiamConnors]

Hi. Thanks for the PR! This one requires the update to be made in Plotly.js as this doc comes from there. I've made the required updates there plotly/plotly.js#6642 and once a new version of Plotly.js is released, we'll update Plotly.py to that version, which will automatically bring in the change.

[LiamConnors]

Closing this out as it is now fixed in Plotly.py.