Stale links DISA STIG

[sspencerwire]

• disa_stig_part1.md updated
• disa_stig_part3.md updated

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 3e47c84:

Number of broken URLs: 8

URL,RESULT,FILENAME
 http://$(hostname):8080,failed,guides/repositories/pulp_fetch_upload.md
 https://andyscott.me,failed,guides/contribute/README.md
 https://mirrors.rockylinux.org/mirrormanager/mirrors,failed,guides/8_6_installation.md
 https://mirrors.rockylinux.org/mirrormanager/mirrors,failed,guides/installation.md
 https://www.stigviewer.com/stigs/red_hat_enterprise_linux_8/,failed,books/disa_stig/disa_stig_part1.md
 https://help.ubuntu.com/community/SwapFaq,failed,labs/kubernetes-the-hard-way/lab9-bootstrapping-kubernetes-workers.md
 https://ftp.gnu.org/gnu/hello/hello-2.12.tar.gz,failed,labs/systems_administration_I/lab7-software_management.md
 https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/9/html-single/configuring_and_managing_networking/index,failed,gemstones/network/nmtui.md