Update basic-writing-and-formatting-syntax.md

[syed-ateeb-naveed]

In the heading "Specifying the theme an image is shown to", added a Note to clarify the purpose of the tag and added the code itself to display the picture for illustration.

Why:

I was just reading the docs to improve my README, where I came across this code and noticed there was no picture attached for illustration. Furthermore, I also noticed an <img> tag, but its purpose was not given, so I decided to clarify it with NOTE.

Closes:
GitHub Docs Issue #34694

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

Before:

After:

Shows a picture of moon and stars, as I have dark mode selected

Check off the following:

• I have reviewed my changes in staging, available via the View deployment link in this PR's timeline (this link will be available after opening the PR).

  • For content changes, you will also see an automatically generated comment with links directly to pages you've modified. The comment won't appear if your PR only edits files in the data directory.

• For content changes, I have completed the self-review checklist.

[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.

[github-actions]

Automatically generated comment ℹ️

This comment is automatically generated and will be overwritten every time changes are committed to this branch.

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.

---

Content directory changes

You may find it useful to copy this table into the pull request summary. There you can edit it to share links to important articles or changes and to give a high-level overview of how the changes in your pull request support the overall goals of the pull request.

Source	Preview	Production	What Changed
get-started/writing-on-github/getting-started-with-writing-and-formatting-on-github/basic-writing-and-formatting-syntax.md	fpt ghec ghes@ 3.14 3.13 3.12 3.11 3.10	fpt ghec ghes@ 3.14 3.13 3.12 3.11 3.10

---

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

[nguyenalex836]

@syed-ateeb-naveed Thanks so much for opening a PR! I'll get this triaged for review ✨

[github-actions]

Thanks for opening a pull request! We've triaged this issue for technical review by a subject matter expert 👀

[nguyenalex836]

@syed-ateeb-naveed Thank you for your patience while our SME team reviewed! You are absolutely correct regarding the lack of illustration and the need to more clearly define the purpose of the <img> tag ✨

While we feel your updates to more clearly define the purpose of the <img> tag may be slightly too general, rest assured we will be reviewing internally how best to address the article as a whole as thoughtfully as possible 💛

Thank you so much for raising a flag on these issues, and your willingness to contribute to our docs! 🙇