Error in docs: CustomPaint instead of CustomPainter

[0xba1]

Hi, while going through the code documentation of CustomPainter, I found an error in which CustomPaint was used instead of CustomPainter https://github.com/flutter/flutter/blob/master/packages/flutter/lib/src/rendering/custom_paint.dart#L29

Error: line 29, lib/src/rendering/custom_paint.dart

/// To implement a custom painter, either subclass or implement this interface
/// to define your custom paint delegate. [CustomPaint] subclasses must
/// implement the [paint] and [shouldRepaint] methods, and may optionally also...

Should be:

/// To implement a custom painter, either subclass or implement this interface
/// to define your custom paint delegate. [CustomPainter] subclasses must
/// implement the [paint] and [shouldRepaint] methods, and may optionally also...

This error is also available on the website docs https://api.flutter.dev/flutter/rendering/CustomPainter-class.html.

This solves #107837

Pre-launch Checklist

• I read the Contributor Guide and followed the process outlined there for submitting PRs.
• I read the Tree Hygiene wiki page, which explains my responsibilities.
• I read and followed the Flutter Style Guide, including Features we expect every widget to implement.
• I signed the CLA.
• I listed at least one issue that this PR fixes in the description above.
• I updated/added relevant documentation (doc comments with ///).
• I added new tests to check the change I am making, or this PR is test-exempt.
• All existing and new tests are passing.

[goderbauer]

LGTM

Thanks!

[darrenaustin]

LGTM

[Piinks]

LGTM