Three minor changes to the manpage of chmod(1).
1. At the description of -H option, I added that symlinks are
not followed _by default_ to show that links can be followed,
but the default chmod behavior is not to do so.
2. Moved a misplaced .Va file command up to the place it belongs.
3. Simplified the grammar that describes symbolic modes.
PR: 16749
Submitted by: Giorgos Keramidas <keramida@ceid.upatras.gr>
aa387b2d8c