[BUG] incorrect pinyin for ü

[af-inet]

The "ü" vowel in pinyin (example: 绿 lǜ) is NOT correctly displayed, versus the regular u sound (example: 路 lù).

This makes learning correct pronunciation impossible and will lead to a lot of mistakes for anyone using this app.

See the above screenshot where 绿 is displayed as lù instead of lǜ.