add link to fastai

app.py

@@ -15,7 +15,7 @@ def predict(img):
 
 title = "Redacted Document Classifier"
 
-description = "A classifier trained on publicly released redacted (and unredacted) FOIA documents, using fastai."
+description = "A classifier trained on publicly released redacted (and unredacted) FOIA documents, using [fastai](https://github.com/fastai/fastai)."
 
 with open("article.md") as f:
     article = f.read()