Remove unneeded quotation mark

[bmorelli25]

Why

I noticed an extra quotation mark in the example while reading the docs. Here's what the example looks like currently (before this PR)

What's being changed

I've removed the extra quotation mark:

Check off the following

• I have reviewed my changes in staging (look for the "Automatically generated comment" and click the links in the "Preview" column to view your latest changes).
• For content changes, I have completed the self-review checklist.

Writer impact

• This pull request impacts the contribution experience
  • I have added the 'writer impact' label
  • I have added a description and/or a video demo of the changes below (e.g. a "before and after video")

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The table contains an overview of files in the content directory that have been changed in this pull request. It's provided to make it easy to review your changes on the staging site. Please note that changes to the data directory will not show up in this table.

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Content directory changes

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Source	Preview	Production	What Changed
pull-requests/committing-changes-to-your-project/creating-and-editing-commits/creating-a-commit-with-multiple-authors.md	fpt ghec ghes@ 3.5 3.4 3.3 3.2 3.1 ghae	fpt ghec ghes@ 3.5 3.4 3.3 3.2 3.1 ghae

[cmwilson21]

@bmorelli25 Thanks so much for opening a PR! I'll get this triaged for review ⚡

[mchammer01]

@bmorelli25 👋🏻 - thanks for creating this PR ✨
The quotation mark is not a stray one, it closes the commit message (that starts after the -m flag in git commit -m "). I am therefore going to close this as the syntax is correct.