incorrect shortTextAlgorithm documentation

[danielnaber]

The documentation about shortTextAlgorithm(int) says: Defaults to 0, but it actually seems to default to 50.

[rferreira]

That is indeed correct as you can see here: https://github.com/optimaize/language-detector/blob/master/src/main/java/com/optimaize/langdetect/LanguageDetectorBuilder.java#L47