Documentation | filesystem: Fix typos and formatting (!220)

[Prashant Rahul (@prashantrahul141)]

Prashant Rahul created a merge request: https://gitlab.rtems.org/rtems/docs/rtems-docs/-/merge_requests/220

Project:Branches: prashantrahul141/rtems-docs:filesystem/typo to rtems/docs/rtems-docs:main
Author:   Prashant Rahul



## Summary

This patch fixes some typos and other small formatting issues with
filesystem docs.

## Generative AI

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