Update index.md

[SergeCroise]

right-hand, left-hand, punctuation, ...
(modifications to check sync with crowdin)

Author checklist (Completed by original Author)

• Contribution a good fit for the Rocky project? Title and Author MetaTags inserted ?
• Is this a non-English contribution?
• If applicable, steps and instructions have been tested to work on a real system
• Did you perform an initial self-review to fix basic typos and grammatical correctness

Rocky Documentation checklist (Completed by Rocky team)

• 1st Pass (Check that document is good fit for project and author checklist completed)
• 2nd Pass (Technical Review - check for technical correctness)
• 3rd Pass (Basic Editorial Review)
• 4th Pass (Detailed Editorial Review and Peer Review)
• Final pass/approval (Final Review)

[github-actions]

Test results for f3143b2:

Number of broken URLs: 0

URL,RESULT,FILENAME

[sspencerwire]

@SergeCroise Thanks! If you give Crowdin a little while it should sync this new data.

[SergeCroise]

@SergeCroise Thanks! If you give Crowdin a little while it should sync this new data.

it works:
https://crowdin.com/translate/rockydocs/523/en-fr?filter=basic&value=0