docs: filesystems: vfs: actualize struct file_system_type description

Added descriptions for:
- fscontext API ('init_fs_context' method, 'parameters' field)
- 'fs_supers' field

Cc: Eric Biggers <[email protected]>
Cc: Miklos Szeredi <[email protected]>
Cc: Al Viro <[email protected]>
Cc: Christian Brauner <[email protected]>
Cc: [email protected]
Cc: [email protected]
Signed-off-by: Alexander Mikhalitsyn <[email protected]>
Reviewed-by: Christian Brauner <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jonathan Corbet <[email protected]>

0 files changed, 0 insertions, 0 deletions