Fix typos in some strings
Fix typos in some strings

Gustorn/WaniKani-for-Android,Gustorn/WaniKani-for-Android,gkathir15/WaniKani-for-Android,msdgwzhy6/WaniKani-for-Android,diptakobu/WaniKani-for-Android,dhamofficial/WaniKani-for-Android,dhamofficial/WaniKani-for-Android,shekibobo/WaniKani-for-Android,shekibobo/WaniKani-for-Android,diptakobu/WaniKani-for-Android,gkathir15/WaniKani-for-Android,msdgwzhy6/WaniKani-for-Android