C/C++ reference material in 3P docs in `Persistent File Storage/FileSystem.md`

https://github.com/AdobeDocs/uxp/blob/47510097aaf62876dfe00a01e00461ce5018e6cc/src/pages/uxp/reference-js/Modules/uxp/Persistent%20File%20Storage/FileSystem.md?plain=1#L292-L302

The link to https://docs.libuv.org/en/v1.x/fs.html provides C/C++ references which will be hard to understand for developers who are more on the light-weight scripting side of things and may not have any experience with more compiler-based languages (let alone C/C++)

Open src/pages/uxp/reference-js/Modules/uxp/Persistent File Storage/FileSystem.md and inspect lines 292-302, then review the linked libuv filesystem reference. Determine what documentation change is intended for scripting-focused readers; the work is done when this section no longer leaves them relying on unexplained C/C++ references.

Written by the indexing model from the issue text.