Fix lingering references to otfdiff
Fix lingering references to otfdiff

Accidentally left these out of the last diff-rename commit.

dougfelt/nototools,googlefonts/nototools,dougfelt/nototools,anthrotype/nototools,anthrotype/nototools,anthrotype/nototools,googlefonts/nototools,moyogo/nototools,dougfelt/nototools,googlei18n/nototools,moyogo/nototools,googlei18n/nototools,googlefonts/nototools,googlei18n/nototools,googlefonts/nototools,moyogo/nototools,googlefonts/nototools