added links to the new quiz apps

1-Introduction/1-intro-to-ML/README.md

1-Introduction/1-intro-to-ML/translations/README.bn.md

1-Introduction/1-intro-to-ML/translations/README.es.md

1-Introduction/1-intro-to-ML/translations/README.fr.md

1-Introduction/1-intro-to-ML/translations/README.id.md

1-Introduction/1-intro-to-ML/translations/README.it.md

1-Introduction/1-intro-to-ML/translations/README.ja.md

1-Introduction/1-intro-to-ML/translations/README.ko.md

1-Introduction/1-intro-to-ML/translations/README.pt-br.md

1-Introduction/1-intro-to-ML/translations/README.ru.md

1-Introduction/1-intro-to-ML/translations/README.tr.md

1-Introduction/1-intro-to-ML/translations/README.zh-cn.md

1-Introduction/1-intro-to-ML/translations/README.zh-tw.md

1-Introduction/2-history-of-ML/README.md

1-Introduction/2-history-of-ML/translations/README.es.md

1-Introduction/2-history-of-ML/translations/README.fr.md

1-Introduction/2-history-of-ML/translations/README.id.md

1-Introduction/2-history-of-ML/translations/README.it.md

1-Introduction/2-history-of-ML/translations/README.ja.md

1-Introduction/2-history-of-ML/translations/README.ko.md