xfsdocs: fix description of directory free block nvalid and nused header fields

The descriptions of the directory free block header's nvalid and nused
fields are backwards, so flip them.  While we're fixing them, augment
the description to relate it to the rest of the directory structure.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
1 file changed
tree: 1486c95d35bd6ffa624b0e6129395583ca41ce79
  1. .gitignore
  2. CHANGES
  3. COPYING
  4. Makefile
  5. README
  6. admin/
  7. design/