Fixed Spanish Description of Arc() function for the Reference in p5js.org website

[OnexiMedina]

Addresses #1225

Changes:

I changed the Spanish description of the arc() function (under 2D primitives category) in the reference for p5js.org, as it was previously half-English and half-Spanish.

As for my specific changes, I found that the English description of the function did not completely match the information found in the current Spanish description. Therefore, I proceeded to make a direct translation of the English description as the first paragraph of the new Spanish translation, and formatted the additional information found in the current Spanish description under it. I made the changes in this manner, to maintain the previous information that another contributor took the time to add to the description. Consequently, this resulted in a new description that is longer than the English version for arc(). (See Images below for reference)

Additionally, I made sure to highlight parameter names and provide the correct link for the ellipseMode() function, as it is hyperlinked in the current English description, but not the Spanish one.

@Guirdo and @limzykenneth , please let me know if this style of change aligns with how you would like the descriptions to be formatted (i.e. Doing a 1-to-1 translation of the English description and retaining additional information found in the current Spanish version after). In the meantime, I will continue to work on changes for the rest of the functions under the 2D primitives category. Hope this helps!

Screenshots of the change:

English arc() description

Current Spanish arc() description

New Spanish arc() Description

[Qianqianye]

Thanks @OnexiMedina. I'm tagging the Spanish translation stewards to review the PR @Guirdo, @Andreu-G, @dnd-alv, @holomorfo

[holomorfo]

The translation is correct

[limzykenneth]

Looks good. Thanks!