Changes for cloud_server_using_nextcloud.md for RL 10

[sspencerwire]

• Remove admonition note for 9 and 10
• Update prerequisites
• replace instances of "we" and "our" with "you" and "your" throughout
• update PHP version
• update package installation list
• replace passive voice phrasing with active voice throughout
• simplify sentences where possible
• update the Nextcloud installation of .zip file directions
• replace contractions with words
• simplify conclusion statement

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 e4f9693:

Number of broken URLs: 5

URL,RESULT,FILENAME
 https://ftp.gnu.org/gnu/hello/hello-2.12.tar.gz,failed,labs/systems_administration_I/lab7-software_management.md
 https://help.ubuntu.com/community/SwapFaq,failed,labs/kubernetes-the-hard-way/lab9-bootstrapping-kubernetes-workers.md
 http://$(hostname):8080,failed,guides/repositories/pulp_fetch_upload.md
 http://your_ip,failed,guides/cms/mediawiki.md
 https://repocompare.rockylinux.org,failed,release_notes/8_5.md