Editing valuta.md

[sspencerwire]

• fix spelling of "financial"
• fix indentation that was slightly off (one space)
• sentence style capitalization on headers throughout
• apparently, the approved use of "dropdown menu" is "drop-down menu"
• replace conjunction "it's" with "it is"

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 f5e85d5:

Number of broken URLs: 2

URL,RESULT,FILENAME
 http://www.example.org/foo.txt,failed,books/web_services/052-load-balancer-proxies-varnish.md
 http://developer.download.nvidia/compute/cuda/repos/rhel9/$,failed,desktop/display/installing_nvidia_gpu_drivers.md