Change the encoding of the Japanese docs to UTF-8

w3m-doc/sample/sample.html

@@ -1,6 +1,6 @@
 
-<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ϥ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ץ<EFBFBD><EFBFBD>Ǥ<EFBFBD><EFBFBD><EFBFBD>
+これはサンプルです。
 <P>
 @hsaka.url@ = http://www2u.biglobe.ne.jp/~hsaka/
 <BR>
-@LINK(hsaka)@ = <A HREF="http://www2u.biglobe.ne.jp/~hsaka/"><EFBFBD><EFBFBD><EFBFBD>ܹ<EFBFBD>§<EFBFBD>Υۡ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڡ<EFBFBD><EFBFBD><EFBFBD></A>
+@LINK(hsaka)@ = <A HREF="http://www2u.biglobe.ne.jp/~hsaka/">坂本浩則のホームページ</A>