A few documentation issues to fix

[perminder-17]

Here's are some of the specific updates to make:

• Document the default value of the ends property (the default is INCLUDE), at least on the splineProperty() page. The splineProperties() page can link to that.
• Replace the broken link to curve() with a link to spline(), on the splineVertex() page.
• Fix spline() examples.
• Fix splinePoint() examples.
• Fix splineTangent() examples.
• Add code example for the ends property to the splineProperty() page.
• Typos, language cleanup 1 (since language complexity and typos affect accessibility)
• Revise top-line descriptions that appear on the main reference page? For example, for splineVertex(), we might replace "Adds a spline curve segment to a custom shape" with "Connects points with a smooth curve (a spline)." This is less pressing, but a more beginner-friendly explanation focused on the main use case may improve discoverability significantly.

[perminder-17]

Hi @GregStanton, thank you for your comment on this issue (link). It helped me make a clear checklist, and I believe I’ve fixed the points you mentioned. I’m also checking the math parts to see what might be missing.

If you know any other examples, docs, or tutorials that need updates, please let me know and I’ll fix them quickly. If you have time, your review on this PR would be very helpful for future readers. I’m happy to improve anything else you suggest. Thanks again!

For reference, here’s the code I’m using for ends (INCLUDE/EXCLUDE): https://editor.p5js.org/aman12345/sketches/wXMOd_gxe