Fix: japanese words

[dongri]

Change Japanese word

like だ -> だ

irb(main):003:0> "だ".bytesize
=> 6
irb(main):004:0> "だ".bytesize
=> 3
irb(main):005:0> 

[dabura667]

Please read the BIP.

All wordlists must be unicode NFKD normalized.

NFKD正規化された状態で単語リストを保有しないとバグ出ますよ。お気をつけて下さい。

[dabura667]

NACK

[dongri]

@dabura667 Thank you

BIP39 Test vectors
https://github.com/bitcoin/bips/blob/master/bip-0039.mediawiki#test-vectors

https://github.com/bip32JP/bip32JP.github.io/blob/master/test_JP_BIP39.json

Is the test data incorrect?
Not unicode NFKD normalized

[dongri]

oh...
I misunderstood the specification.