Adjusting content errors and incompatibility with md format

[jimcat8]

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)

[sspencerwire]

This introduces passive voice. Please reword it to:

"You can see an introduction with extra detail in [this document](../sed_awk_grep/1_regular _expressions_vs_wildcards.md)."

[sspencerwire]

Wildcard should be lower-case in both these cases:

#### Extract a group of files from a *tar* backup using a wildcard

and

Specify a wildcard to extract the files matching the specified selection pattern.

[sspencerwire]

The word "Regular" should be lower-case: regular expressions

The second "wildcard" here should not be capitalized:

**Wildcard (wildcard character)**: used to match file or directory names.

[github-actions]

Test results for 1875d3c:

Number of broken URLs: 7

URL,RESULT,FILENAME
 https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/9/html/9.0_release_notes/new-features#enhancement_networking,failed,release_notes/9_0.md
 http://example.org/foo.txt,failed,books/web_services/052-load-balancer-proxies-varnish.md
 https://azuremarketplace.microsoft.com/en-us/marketplace/apps/resf.rockylinux-aarch64,failed,guides/cloud/migration-to-new-azure-images.md
 https://www.volted.net/,failed,guides/contribute/README.md
 http://0.0.0.0:61208/,failed,guides/network/glances_network_monitoring.md
 https://your.domain.name/install.php,failed,guides/cms/chyrp_lite.md
 https://www.landoflinux.com/linux_procfs_sysfs.html,failed,gemstones/core/view_kernel_conf.md