Update requirements-for-listing-an-app.md (typo fix)

[SwuduSusuwu]

Why:

Closes: #37660

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

:%s/or information about how integrate/or information about how to integrate/

Check off the following:

• [ X ] 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.
• [ X ] The changes in this PR meet the docs fundamentals that are required for all content.
• [ X ] All CI checks are passing and the changes look good in the review environment.

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The table shows the files in the content directory that were changed in this pull request. This helps you review your changes on the review server. Changes to the data directory are not included in this table.

Source	Review	Production	What Changed
apps/github-marketplace/creating-apps-for-github-marketplace/requirements-for-listing-an-app.md	fpt ghec	fpt ghec

Key: fpt: Free, Pro, Team; ghec: GitHub Enterprise Cloud; ghes: GitHub Enterprise Server

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[Sharra-writes]

@SwuduSusuwu Looks good! Thanks for catching it. 💛 I'll get it merged as soon as checks are passing.

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