Update to --format shake

A very unimportant point release of lsseq.

I noticed that the output of lsseq --format shake didn't follow the conventions of the rest of the --format outputs. Since shake has been SO LONG deprecated, that I haven't used this option for decades I hadn't noticed that it was an oddball. I checked some OLD documentation for shake and redid the output to still be correct - that is, if you were to paste multiple sequences (from lsseq output) when calling shake from the command line, it should work.

So, fixed the old shake oddball output from this:

shake -t 1-15 r1.@@@.jpg
shake -t 101-115 r2.@@@.jpg
shake -t 1-15 rrr01.@@@.ass

to this

r1.@@@.jpg -t 1-15
r2.@@@.jpg -t 101-115
rrr01.@@@.ass -t 1-15

Really, I didn't need to do this because I think NOBODY uses shake anymore, I can't imagine that it runs on any machines still. But what the heck, it was bugging me.