s/lanuage/language/

I just noticed it in the [release screenshot](https://github.com/untv/untv/releases/tag/v0.8.0) ^^
![](https://camo.githubusercontent.com/54aede28b169ea61865007f6b8fdc6c9972dd8d3/68747470733a2f2f636c6f75642e67697468756275736572636f6e74656e742e636f6d2f6173736574732f313138383837352f323533303639382f36613664616239612d623532392d313165332d383233302d6637653039356630633966642e706e67)