Fix Aligned word vectors URL

Summary: Pull Request resolved: https://github.com/facebookresearch/fastText/pull/777

Reviewed By: EdouardGrave

Differential Revision: D14996906

Pulled By: Celebio

fbshipit-source-id: 8e23ced2b33d23955fa4381e7fe80e94146569a3

alignment/README.md

@@ -50,4 +50,4 @@ If you use the unsupervised alignment method, please cite:
     journal={arXiv preprint arXiv:1805.11222},
     year={2018}
 }
-```
+```

alignment/align.py

@@ -10,6 +10,7 @@
 import numpy as np
 import argparse
 from utils import *
+import sys
 
 parser = argparse.ArgumentParser(description='RCSLS for supervised word alignment')