🌐 Add Italian translation for docs/it/docs/index.md

[matteospanio]

add italian translation for index docs page based on PR #1576 by @csr and reviewed by @bsab, @PieroMacaluso and @rpalloni

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (cf73051) 100.00% compared to head (f267846) 100.00%.
Report is 1086 commits behind head on master.

❗ Current head f267846 differs from pull request most recent head a19275d. Consider uploading reports for the commit a19275d to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##            master     #5233    +/-   ##
==========================================
  Coverage   100.00%   100.00%            
==========================================
  Files          540       532     -8     
  Lines        13969     13684   -285     
==========================================
- Hits         13969     13684   -285     

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[github-actions]

📝 Docs preview for commit f267846 at: https://62ec2c22488b4a3263a06921--fastapi.netlify.app

[matteospanio]

Since it was a one year old PR I updated the translation with @Ale-Cas contributions and I pulled the latest code update from master branch.

[tiangolo]

📝 Docs preview for commit 96b0efb at: https://100687c6.fastapitiangolo.pages.dev

[tiangolo]

📝 Docs preview for commit a19275d at: https://814637cf.fastapitiangolo.pages.dev

[alejsdev]

Thanks for your work @matteospanio 🤓

And thanks for your help @Ale-Cas 🚀✨