Fix org settings navigation: 'Repository defaults' is now 'General'

[Zain-Bin-Arshad]

Docs corrections

Why:

Currently, the doc says go to Repository defaults but there is no such section. The respective settings are in General section.

What's being changed (if available, include any code snippets, screenshots, or gifs):

BEFORE:

AFTER:

Documenation

Check off the following:

• A subject matter expert (SME) has reviewed the technical accuracy of the content in this PR. In most cases, the author can be the SME. Open source contributions may require an SME review from GitHub staff.
• The changes in this PR meet the docs fundamentals that are required for all content.
• All CI checks are passing and the changes look good in the review environment.

[welcome]

Thanks for opening this pull request! A GitHub docs team member should be by to give feedback soon. In the meantime, please check out the contributing guidelines.

[docs-bot]

This pull request may have been opened accidentally. I'm going to close it now, but feel free to check out our contribution guidelines, or raise an issue.

[github-actions]

How to review these changes 👓

Thank you for your contribution. To review these changes, choose one of the following options:

• Spin up a codespace
• Set up a local development environment

A Hubber will need to deploy your changes internally to review.

Table of review links

Note: Please update the URL for your staging server or codespace.

This pull request contains code changes, so we will not generate a table of review links.

🤖 This comment is automatically generated.