corrected /bin/sh path to /usr/bin/env bash in all scripts

classification-example.sh

@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/usr/bin/env bash
 #
 # Copyright (c) 2016-present, Facebook, Inc.
 # All rights reserved.

word-vector-example.sh

@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/usr/bin/env bash
 #
 # Copyright (c) 2016-present, Facebook, Inc.
 # All rights reserved.