Eliminate space in shebang

Was causing dockerfile to fail to load

mysql-backup-s3/backup.sh

@@ -1,4 +1,4 @@
-#! /bin/sh
+#!/bin/sh
 
 set -e
 

mysql-backup-s3/install.sh

@@ -1,4 +1,4 @@
-#! /bin/sh
+#!/bin/sh
 
 # exit if a command fails
 set -e

mysql-backup-s3/run.sh

@@ -1,4 +1,4 @@
-#! /bin/sh
+#!/bin/sh
 
 set -e