Correct some typos.

[longo-andrea]

No description provided.

[CLAassistant]

Thank you for your submission, we really appreciate it. Like many open source projects, we ask that you all sign our Contributor License Agreement before we can accept your contribution.
1 out of 7 committers have signed the CLA.

✅ longo-andrea
❌ marksq
❌ iliakan
❌ Antiai
❌ lex111
❌ david-cho-lerat-HL2
❌ odv
_{You have signed the CLA already but the status is still pending? Let us recheck it.}