Update methods.md

[pomegranateSEO]

Description

A few examples added to the https://www.codecademy.com/resources/docs/javascript/methods page to supplement the exercise on the https://www.codecademy.com/courses/introduction-to-javascript/lessons/arrays/exercises/more-array-methods Introduction to Javascript page.

Issue Solved

More examples added

Type of Change

(sorry this is my first pull request, please have patience with me if I am wrong)

• Adding a new entry
• Updating the documentation

Checklist

• [ X ] All writings are my own. (with some assistance from Gemini 3.0 and GPT 5.2)
• [ ] My entry follows the Codecademy Docs style guide.
• [ X ] My changes generate no new warnings.
• [ X ] I have performed a self-review of my own writing and code.
• [ X ] I have checked my entry and corrected any misspellings.
• [ X ] I have made corresponding changes to the documentation if needed.
• I have confirmed my changes are not being pushed from my forked main branch.
• I have confirmed that I'm pushing from a new branch named after the changes I'm making.
• [ X ] I have linked any issues that are relevant to this PR in the Issues Solved section.

[CLAassistant]

All committers have signed the CLA.

[mamtawardhani]

Hey @pomegranateSEO, I'll close this PR as this doesn't map to any issue. Also, if you would like to contribute to Codecademy docs, please check the open issues and comment on the ones that interest you. Thank you! 😄