From char code new entry

[Ariel-GonzAguer]

Description

Create the entry for the term of the fromCharCode method of the JavaScript String object, which allows you to obtain a text string from UTF-16 code units.
The motivation was to participate again in an open source project that helps the CodeCademy community.

Issue Solved

Closes #6959

Type of Change

• Adding a new entry

Checklist

• [x ] All writings are my own.
• [x ] 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.
• [x ] I have confirmed my changes are not being pushed from my forked main branch.
• [x ] 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.

[Ariel-GonzAguer]

@mamtawardhani 😁🎯

[mamtawardhani]

Thank you for contributing to Codecademy Docs @Ariel-GonzAguer 😄
Looks good for a second review! 🚀

[Ariel-GonzAguer]

@mamtawardhani thanks for the fixes!
ill do it better in the next PR! 🚀🚀

[dakshdeepHERE]

LGTM 🚀

[github-actions]

👋 @Ariel-GonzAguer
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