Use imshow in getting_started

[lucyleeow]

Description

Porting over of: napari/napari#5184
Relates to #14

• Replace view_image with imshow in getting started.
• Updates syntax so classes/functions link to their API.
• Minor other changes.

Note that the images in getting started should probably be updated but outside scope of this PR.

Type of change

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

References

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• example: all tests pass with my change

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• I have made corresponding changes to the documentation
• I have added tests that prove my fix is effective or that my feature works
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[lucyleeow]

Thank you @jni and @psobolewskiPhD for your reviews over in napari/napari#5184

I have updated the screenshots so they show the cells and not the astronaut.
Happy to amend the screenshots or use your mac screenshot instead. Have left the outdated but correct content screenshots as suggested but happy to update those as well.

(ready for review)

[psobolewskiPhD]

The new screenshots look good to me!

[lucyleeow]

Thank you!

[Czaki]

Should this be ported o to 0.4.17 docs (as this release does not use new docs infrastructure)?

[jni]

Oof. On the one hand, yes, on the other, it's not essential — you don't have to use imshow. My preference is that we work out how to update each version's docs here independently of the core repo. Then we can use that infra to make any changes we like to each version's docs, including using imshow in /stable/