Update 07-file-systems.md

[alemorvan]

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)

[alemorvan]

@sspencerwire I did the modification to answer to Anna.
As it's early in the morning I will merge my changes, but feel free to modify if it's not good enough.

[github-actions]

Test results for 9f39fa6:

Number of broken URLs: 7

URL,RESULT,FILENAME
 https://mirror2.sandyriver.net/pub/rocky/8.7/PowerTools/x86_64/os/,failed,books/admin_guide/13-softwares.md
 https://github.com/bdacus01,failed,guides/contribute/README.md
 http://www.flaviosiqueira.com.br/,failed,guides/contribute/README.md
 https://ersei.saggis.com/,failed,guides/contribute/README.md
 https://dl.rockylinux.org/pub/rocky/9.1/live/x86_64/,failed,guides/desktop/kde_installation.md
 https://dl.rockylinux.org/pub/rocky/9.1/live/x86_64/,failed,guides/desktop/mate_installation.md
 https://dl.rockylinux.org/pub/rocky/9.1/live/x86_64/,failed,guides/desktop/xfce_installation.md