Create 'malware' topic.

[Colack]

Please confirm this pull request meets the following requirements:

• I followed the contributing guidelines: https://github.com/github/explore/blob/main/CONTRIBUTING.md.
• I am not the sole author or employee of a company who created the topic or collection I am changing.

Which change are you proposing?

• Suggesting edits to an existing topic or collection
• Curating a new topic or collection
• Something that does not neatly fit into the binary options above

---

Curating a new topic or collection

• I've formatted my changes as a new folder directory, named for the topic or collection as it appears in the URL on GitHub (e.g. https://github.com/topics/[NAME] or https://github.com/collections/[NAME])
• My folder contains a *.png image (if applicable) and index.md
• All required fields in my index.md conform to the Style Guide and API docs: https://github.com/github/explore/tree/main/docs

I'm taking the changes that I mention in this pull request and putting them here. Essentially just adding the malware topic with an image.

[ahpook]

Couple problems to get tests passing, but thanks for picking this one up @Colack !

[ahpook]

Suggested change

	aliases: virus, computer-malware
	aliases: computer-malware

you can't have the same thing as both an alias and a 'related' item

[ahpook]

Suggested change

	short_description: "Any program or file that is intentionally harmful to a computer, network or server"
	short_description: "Any program or file that is intentionally harmful to a computer, network or server."

short_description needs to end with punctuation.

[ahpook]

LGTM thanks for this!