Changed link to Fasttext pretrained vectors
Changed link to Fasttext pretrained vectors

File moved from 
<https://github.com/facebookresearch/fastText/blob/master/pretrained-vectors.md> to <https://github.com/facebookresearch/fastText/blob/master/docs/pretrained-vectors.md>

Moved into docs folder.
stephenhky/PyShortTextCategorization