API doc for isCollection should be collection

[solerante]

Describe the bug
Tileset.isCollection returns nothing but Tileset.collection returns true or false.
https://www.mapeditor.org/docs/scripting/classes/Tileset.html#isCollection

To Reproduce
Steps to reproduce the behavior:

1. Open a tileset
2. execute script tiled.activeAsset.isCollection
3. log returns an empty line

alternatively:

1. Open a tileset
2. execute script tiled.activeAsset.collection
3. log returns true or false

Expected behavior
Tileset.isCollection should return true or false, or API doc should be updated to Tileset.collection

Media

Specifications:

• OS: Windows 10
• Tiled Version: 1.9.2

[eishiya]

I imagine existing scripts that use this are more likely to be following the docs and using isCollection - if anyone had run into this issue before, they probably would've opened an issue. Plus, isCollection is consistent with isTileset, isTileMap, etc.

The name of the field for the JS side is defined here, and seems to only be used in this one line, so this is probably the easiest place to fix it.

tiled/src/tiled/editabletileset.h

Line 59 in 80220a9

Q_PROPERTY(bool collection READ isCollection)

[bjorn]

I imagine existing scripts that use this are more likely to be following the docs and using isCollection

I think that's unlikely, because they would have noticed it isn't working. :-) Anyway, I think I'll just make both work at this point.

[eishiya]

I imagine existing scripts that use this are more likely to be following the docs and using isCollection

I think that's unlikely, because they would have noticed it isn't working. :-) Anyway, I think I'll just make both work at this point.

My scripts use isCollection because it's in the docs and I just never tested with image collections because I don't use them myself xP