Syntax of the undo command was incorrect

[sspencerwire]

• When markdown errors were recently corrected, the undo command was improperly formatted as

Undo the last action:

++u++

Undo the actions on the current line:

++U++

However neither line is correct. Markdown keyboard commands always assume a capital letter, and must be entered in lower case or in quotes. To get the desired lower-case "u" for the first and capital U for the second, it must be entered as:

Undo the last action:

++"u"++

Undo the actions on the current line:

++u++

The first will now render in lower-case as expected and the second will render a capital "U."

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 b2ce07c:

Number of broken URLs: 0

URL,RESULT,FILENAME

[sspencerwire]

@SergeCroise Thanks to your recent PR, I was able to see that the syntax of these commands was wrong all the way around. (see PR description). I'm sure there are other errors that were inadvertently introduced in those documents when the effort was made to cleanup markdown errors. Thanks very much!!