fix typos
fix typos

(cherry picked from commit 5e7bba633e92e32f1c18e3e2e32317cfdc3a2663)

0xpr03/VocableTrainer-Android,0xpr03/VocableTrainer-Android,0xpr03/VocableTrainer-Android,0xpr03/VocableTrainer-Android,0xpr03/VocableTrainer-Android