Fix multiple typographical errors across Node.js documentation files

[Venkat-Entropik]

I’ve identified several typographical errors across different documentation files in the Node.js repository. These include spelling mistakes and duplicated words, which may affect readability and professionalism.

File: apps/site/pages/en/blog/release/v18.14.0.md
Typo: seperated → separated

File: apps/site/pages/en/blog/release/v16.17.0.md
Typo: recieve → receive

File: apps/site/pages/en/blog/release/v12.17.0.md
Typo: accomodate → accommodate

[avivkeller]

There's no need to open an issue for an immediate PR