Fixed shebang and added .bak files for example purposes

cron_appli_update.sh

@@ -1,4 +1,4 @@
-#/bin/bash!
+#!/bin/bash
 
 # *     *     *     *     *  command to be executed
 # -     -     -     -     -

facebook/facebook_update.sh

@@ -1,4 +1,4 @@
-#/bin/bash!
+#!/bin/bash
 
 touch lock
 #curl "https://graph.facebook.com/v3.3/amicale.deseleves/posts?fields=message%2Cfull_picture%2Ccreated_time%2Cpermalink_url&&date_format=U&access_token=EAAGliUs4Ei8BAGwHmg7SNnosoEDMuDhP3i5lYOGrIGzZBNeMeGzGhpUigJt167cKXEIM0GiurSgaC0PS4Xg2GBzOVNiZCfr8u48VVB15a9YbOsuhjBqhHAMb2sz6ibwOuDhHSvwRZCUpBZCjmAW12e7RjWJp0jvyNoYYvIQbfaLWi3Nk2mBc" > facebook_data.json

menu/menu_update.sh

@@ -1,4 +1,4 @@
-#/bin/bash!
+#!/bin/bash
 touch lock
 curl "https://webservices-v2.crous-mobile.fr/ws/v1/regions/5/restaurants/114/menus" > menu_data.json && python3 handler.py
 rm lock

update_washinsa.sh

@@ -1,4 +1,4 @@
-#/bin/bash!
+#!/bin/bash
 
 cd $HOME/public_html/washinsa
 # update washing machine list