Add Term Entry for the JavaScript .endsWith() method

[joha1na]

Description

This PR adds documentation for the JavaScript String method .endsWith(), which checks whether a string ends with the characters of a specified string and returns a boolean value. The documentation includes a clear explanation of the method, its syntax, parameters, and practical examples demonstrating its usage.

Issue Solved

Closes #6957

Type of Change

• Adding a new entry

Checklist

• All writings are my own.
• My entry follows the Codecademy Docs style guide.
• My changes generate no new warnings.
• I have performed a self-review of my own writing and code.
• I have checked my entry and corrected any misspellings.
• 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.
• I have linked any issues that are relevant to this PR in the Issues Solved section.

[CLAassistant]

All committers have signed the CLA.

[mamtawardhani]

Thank you for contributing to Codecademy Docs @joha1na 😄
The entry looks good for a second round of review! 🚀