Fix typos in pixelarray API docs

[aatle]

Also rewrite explanation of strides.

[coderabbitai]

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• docs/reST/ref/pixelarray.rst

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📝 Walkthrough

Walkthrough

The PixelArray reference documentation corrects the shape and replace wording, clarifies byte-offset calculations for strides, and adds a 10×20 two-dimensional example.

Changes

PixelArray documentation

Layer / File(s)	Summary
Clarify PixelArray attribute and method descriptions docs/reST/ref/pixelarray.rst	Corrects the shape and replace descriptions. Defines stride byte offsets, explains summed index-by-stride calculations, clarifies negative strides, and adds the standard 10×20 example with strides (4, 40).

Estimated code review effort: 1 (Trivial) | ~2 minutes

Merge Risk: ⚪ Minimal · up to 18b89

This PR only corrects PixelArray documentation and rewrites the explanation of strides; no actionable merge-blocking risk remains after normal checks and review.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0…
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Title check	✅ Passed	The title clearly identifies the main change: correcting typos in the PixelArray API documentation. It is concise and directly related to the changeset.
Description check	✅ Passed	The description accurately identifies the rewrite of the strides explanation, which is a documented part of the changeset.

Full details: Docstring Coverage

Explanation

No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0 files. (1 skipped: 1 unsupported.)

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Actionable comments posted: 1

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Inline comments:
In `@docs/reST/ref/pixelarray.rst`:
- Around line 186-189: Update the stride description near the PixelArray
multidimensional indexing documentation to state that the byte offset is
calculated by summing index[i] multiplied by strides[i] across all dimensions,
while retaining the existing explanation of negative strides.

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Reviewing files that changed from the base of the PR and between 1bdef11 and 97ed898.

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• docs/reST/ref/pixelarray.rst

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[Starbuck5]

I don’t get this overall section (around highlighted line).

What the heck is an offset for an index, what does that actually mean

And why does a standard PixelArray have those strides. Is it off a 4 byte per pixel surface? If so, that should be clear to know where that 4 is coming from. And then thats 10x4 =40 presumably.

So a 2D PixelArray the first dimension is the pixel the second dimension is the width?