Fix shebang in update scripts

This change fixes the typo in the shebang of the update scripts.

scripts/check.sh

@@ -1,4 +1,4 @@
-#1/bin/bash
+#!/bin/bash
 # Script to check for new kernel release
 set -e
 set -o pipefail

scripts/update.sh

@@ -1,4 +1,4 @@
-#1/bin/bash
+#!/bin/bash
 # Script to prepare update for new kernel release
 set -e 
 set -o pipefail