Revise file name restrictions in renaming guide

[ashis-baral]

Why:

Closes:

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

The file name restriction in the Renaming a file article is inaccurate/misleading.

Renaming a File on Github

This PR removes the following incorrect statement:

File names created via the web interface can only contain alphanumeric characters and hyphens (-). To use other characters, create and commit the files locally and then push them to the repository.

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.

[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]

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Table of review links

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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 a staging server. Changes to the data directory are not included in this table.

Source	Review	Production	What Changed
repositories/working-with-files/managing-files/renaming-a-file.md	fpt ghec ghes@ 3.22 3.21 3.20 3.19 3.18 3.17	fpt ghec ghes@ 3.22 3.21 3.20 3.19 3.18 3.17

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

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[subatoi]

Thanks @ashis-baral—good find and apologies about the same situation with the automatic closure. I'll get this merged now

[ashis-baral]

@subatoi Thank you! No worries, and I really appreciate you taking the time to review and merge the correction.👍

[github-actions]

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