Use relative paths in scripts/download.sh (#632)

If there is another folder with the same name in your path when running
the script, it will enter that folder and recursively try to download
all the files. It the folder is big enough, it can hang the computer.

Co-authored-by: Gonzalo Bella <gonzalobella@gambitresearch.com>

scripts/download.sh

@@ -11,7 +11,7 @@ download_for_directory() {
 
     for f in *; do
         if [[ -d ${f} ]]; then
-            download_for_directory ${f} &
+            download_for_directory "./${f}" &
         fi
     done