koji-call: add page

[DustMerlin]

Checklist

• The page(s) are in the correct platform directories: common, linux, osx, windows, sunos, android, etc.
• The page description(s) have links to documentation or a homepage.
• The page(s) follow the content guidelines.
• The page(s) follow the style guide.
• The PR contains at most 5 new pages.
• The PR is authored by me, or has been human-reviewed if it was created with AI or machine translation software.
• The PR title conforms to the recommended templates.
• Version of the command being documented (if known):

Reference issue: #

[tldr-bot]

The build for this PR failed with the following error(s) at commit
2a90a2d44a07bc8d868e5aba660386bab3223e6f:

pages/linux/koji-call.md:4: TLDR003 Descriptions should start with a capital letter

Please fix the error(s) and push again.

[Managor]

Would you mind opening a "Lets document" issue on the issue tracker so that we can track the documentation progress?

[DustMerlin]

Would you mind opening a "Lets document" issue on the issue tracker so that we can track the documentation progress?

I have opened "Lets document: koji" issue. #19268