Modify yelan hitmarks.

[just1ce5]

Addresses #2291 .

[soloxcx]

8 frames for Yelan N0 window sounds too high. Based on your recording it is perhaps more like 4 frames, similar to the other bow units recorded. However you need a 2nd character in the team to catch the 'grey-out' frame for when her jump starts. I was planning to tackle that issue so nbd if you don't, but I would re-record Yelan N0 timings according to the frame guide, also add the video to docs