fix link in bash script

Summary:
Google stopped to provide service for http-download.

Following #89, the link is changed to a location on github.

Reviewed By: piotr-bojanowski

Differential Revision: D4020056

fbshipit-source-id: d9abe5920f3e999f9c736575f38aedba47f7684e

classification-example.sh

@@ -27,7 +27,7 @@ mkdir -p "${DATADIR}"
 
 if [ ! -f "${DATADIR}/dbpedia.train" ]
 then
-  wget -c "https://googledrive.com/host/0Bz8a_Dbh9QhbQ2Vic1kxMmZZQ1k" -O "${DATADIR}/dbpedia_csv.tar.gz"
+  wget -c "https://github.com/le-scientifique/torchDatasets/raw/master/dbpedia_csv.tar.gz" -O "${DATADIR}/dbpedia_csv.tar.gz"
   tar -xzvf "${DATADIR}/dbpedia_csv.tar.gz" -C "${DATADIR}"
   cat "${DATADIR}/dbpedia_csv/train.csv" | normalize_text > "${DATADIR}/dbpedia.train"
   cat "${DATADIR}/dbpedia_csv/test.csv" | normalize_text > "${DATADIR}/dbpedia.test"