Fix a typo on the scripts

scripts/pkg-size.sh

@@ -1,8 +1,8 @@
+#!/usr/bin/env bash
+
 # This script show the package size of the recipes ("stage.pkgar" and "stage.tar.gz")
 # It must be used by package maintainers to enforce the library linking size policy
 
-#!/usr/bin/env bash
-
 if [ $# = 0 ]
 then
     find cookbook/recipes \( -name stage.pkgar -o -name stage.tar.gz \) -exec ls -hs {} \;