Fix wrong encoding in README.md

Author: massanoori

README.md

@@ -16,7 +16,7 @@ How to install and use
 Instructions are given at online manual.
 
 * English: <http://throtator-manual.readthedocs.io/en/stable/>.
-* “ú–{Œê: <http://throtator-manual.readthedocs.io/ja/stable/>.
+* 日本語: <http://throtator-manual.readthedocs.io/ja/stable/>.
 
 Repository of manual
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