[fix] Windows$B$G(BUnicodeDecodeError$B$,=P$kLdBj$r=$@5(B

- index.txt$B$,2=$1$F$$$?$N$G!"(Bstr$B7?$G;}$C$F$$$?%Q%9$d%?%$%H%k$N>pJs$r(BUnicode$B7?$KJQ99(B
- index.html$B0J30$N(BHTML$B%U%!%$%k$K$b%X%C%@$rDI2C(B