The link on line 15 in intl/ja/README.md does not point to the intended URL.

[miomaeshima]

In the item 0 of the section "If you've decided to join（参加方法)” in Japanese translation,
one of the links points to the whole
"www.100DaysOfCode.com/connect）から、好きなプラットフォームを選んで他の参加者と繋がりましょう。"
instead of
"www.100DaysOfCode.com/connect".
So, the reader cannot land on the intended URL.

[miomaeshima]

I sent a pull request #403 to fix this!