Editing dnf_package_manager.md

[sspencerwire]

• move original filename with spaces to one without
• edit the meta so that it is correct based on contributors
• remove all images, as the content can be represented as code blocks, rather than images
• when rendering the content that is within code blocks, some of the output is truncated on purpose and marked with "... (some command output removed)" or similar
• because some of the examples originally used were not on my test system, some examples were substituted
• some sentence structure has been simplified and/or written differently

Author checklist (Completed by original Author)

• Good fit for the Rocky Linux project? Title and Author Metatags inserted ?
• If applicable, steps and instructions have been tested to work
• Initial self-review to fix basic typos and grammar completed

Rocky Documentation checklist (Completed by Rocky team)

• 1st Pass (Document is good fit for project and author checklist completed)
• 2nd Pass (Technical Review - check for technical correctness)
• 3rd Pass (Detailed Editorial Review and Peer Review)
• Final approval (Final Review)

[github-actions]

Test results for 496fe0a:

Number of broken URLs: 5

URL,RESULT,FILENAME
 https://azure.microsoft.com/en-us/,failed,guides/automation/templates-automation-packer-vsphere.md
 https://www.ssllabs.com/ssltest/,failed,guides/web/caddy.md
 http://www.camalan.net,failed,guides/contribute/README.md
 https://www.qyecst.cn,failed,guides/contribute/README.md
 https://www.linode.com/docs/guides/beginners-guide-to-lxd-reverse-proxy,failed,guides/containers/lxd_web_servers.md