Fixing typos in assignment guide
Fixing typos in assignment guide

Typos

MIFisheriesScience/MIFisheriesScience.github.io,MIFisheriesScience/MIFisheriesScience.github.io,MIFisheriesScience/MIFisheriesScience.github.io,MIFisheriesScience/MIFisheriesScience.github.io