Updated index.js's Korean translation
Updated index.js's Korean translation

The Korean index was pretty outdated. So I updated Korean displays and fixed some indentions
of uk translation

Maximaximum/learnGitBranching,andriymoroz/learnGitBranching,pcottle/learnGitBranching,pcottle/learnGitBranching,edombowsky/learnGitBranching,edombowsky/learnGitBranching,Maximaximum/learnGitBranching,pcottle/learnGitBranching,andriymoroz/learnGitBranching