bug#47703: Mention if ln -s needs -r, or ln -r needs -s

[積丹尼 Dan Jacobson]

man ln says:

       -r, --relative
              create symbolic links relative to link location

       -s, --symbolic
              make symbolic links instead of hard links

Does -s need -r,
or   -r need -s?

Hard to tell from the man page.

Had to find out the 'hard' way.

Please mention the answer on the man page.

Thanks.