Alpha mask example is using different images than referenced in the code

[davepagurek]

Not sure if these are in the repo or not, but on this example https://p5js.org/examples/imported-media-alpha-mask/ the code references some unsplash images that are consistent with its thumbnail:

However, the actual code generates this result:

[Qianqianye]

Thanks @davepagurek. I'm tagging @nickmcintyre to take a look at this.

[nickmcintyre]

@calebfoss what do you think about the following tweaks?

• Update image links and attribution
• Link to the VS Code section the Setting Up Your Environment tutorial instead of the GitHub wiki
• "Using the mask() function..."

[calebfoss]

The correct mask.png file is here in the example project repo. All the old examples were copied into the new website repo and then the files from our example project repo were copied. In this case, the old asset is being used with the code from our example project. I would recommend checking all of the examples for issues resulting from that process.