Add FYA

[codegeek1001]

Add "FYA"

If you want to add or update an acronym

Keep in mind that the readme.md is generated. It is useless to edit it directly.
If you want to add or update an acronym, edit the correct file in the data folder
(e.g. acronyms.json)

Checklist before merging

• The title says what this PR do
• The description includes an issue ticket number if any
• Only a json is changed if you want to add or update an acronym

[aloisdg]

I didn't know that one. It seems quite common: 1 2 3. Thank you!