Change loadModel() example

[TanviKumar]

Use smaller .obj file for faster loading
Model used is suitable for canvas size of example. (current example is too small)

[TanviKumar]

To resolve #2904

[almchung]

Please add the new example instead of replacing the old (teapot) example

[TanviKumar]

@almchung Done!

[kjhollen]

hi @TanviKumar, I'm not seeing your updates—can you make sure you've pushed your changes? thanks!

[TanviKumar]

Hey @kjhollen, sorry about that, changes pushed!

[TanviKumar]

@almchung @kjhollen The model() example uses the teapot too. Would it be advisable to change it to the corrected teapot example or the octahedron example in this PR?

[kjhollen]

great! I made one little edit because the word 'teapot' was still hanging around in the alt text for the other example.

[PAEDevelopment]

I'm sorry that I'm ignorant of the process here, and don't quite have the skills to contribute, but there are still tiny teapots in the examples and no octahedrons...

[TanviKumar]

@PAEDevelopment , the example code has been changed to reflect the requirement, I believe these changes are yet to be pushed to the site itself and should be in the near future.