"Editing (part-1) of 18-about-pam.md"

[sspencerwire]

• some simplification
• some replacing of passive voice phrasing with active voice (not completed)
• move document to "security_enhancements" book
• move image to "security_enhancements" book
• more to do

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 bc1e6b9:

Number of broken URLs: 22

URL,RESULT,FILENAME
 https://ftp.gnu.org/gnu/hello/hello-2.12.tar.gz,failed,labs/systems_administration_I/lab7-software_management.md
 https://repocompare.rockylinux.org,failed,release_notes/8_5.md
 http://$(hostname):8080,failed,guides/repositories/pulp_fetch_upload.md
 https://www.intel.com/content/dam/www/public/us/en/documents/product-briefs/ipmi-second-gen-interface-spec-v2-rev1-1.pdf,failed,guides/hardware/ipmi_management.md
 https://git.launchpad.net/cloud-init,failed,guides/virtualization/cloud-init/07_contributing.md
 https://wiki.rockylinux.org/team/release_engineering/debranding/,failed,guides/package_management/package_debranding.md
 https://ftp.gnu.org/gnu/tar/,failed,guides/backup/tar.md
 https://www.dokuwiki.org/dokuwiki,failed,guides/cms/dokuwiki_server.md
 https://download.dokuwiki.org/,failed,guides/cms/dokuwiki_server.md
 https://download.dokuwiki.org/src/dokuwiki/dokuwiki-stable.tgz,failed,guides/cms/dokuwiki_server.md
 http://your_ip,failed,guides/cms/mediawiki.md
 https://IP:11443/,failed,guides/network/unifi_os.md
 https://docs.rockylinux.org/guides/contribute/ai-contribution-policy.md,failed,guides/contribute/README.md
 https://andyscott.me,failed,guides/contribute/README.md
 https://support.torproject.org/glossary/pluggable-transports/,failed,guides/proxies/tor_relay.md
 https://www.packer.io/docs/builders/vsphere/vsphere-iso,failed,guides/automation/templates-automation-packer-vsphere.md
 https://dl.rockylinux.org/pub/rocky/9.6/live/x86_64/,failed,guides/desktop/kde_installation.md
 https://coding.tools/regex-tester,failed,books/sed_awk_grep/1_regular_expressions_vs_wildcards.md
 https://tool.oschina.net/regex/,failed,books/sed_awk_grep/1_regular_expressions_vs_wildcards.md
 https://mirrors.fedoraproject.org/metalink?repo=epel-8&arch=$basearch&infra=$infra&content=$contentdir,failed,books/admin_guide/13-softwares.md
 https://www.maths.cam.ac.uk/computing/printing/xsane,failed,desktop/printing/hp-all-in-one.md
 https://www.maths.cam.ac.uk/computing/printing/xsane,failed,desktop/printing/brother-all-in-one.md