Comment typo in assgn 2 of week 4. # Print the cost every 100 training example, typo?

[awesomele]

in the 2n programming assignment of week 4, I am see comment "# Print the cost every 100 training example, ", it should be “iteration” I think .

[crisrise]

Dear @awesomele I also see the typo in some of the comments, thanks for signalling that