fix shellcheck error of SC2148

sasurau4 · sasurau4 · commit 21a097f17e62 · 2020-11-06T20:33:12.000+09:00
diff --git a/scripts/config.sh b/scripts/config.sh
@@ -1,3 +1,4 @@
+#!/usr/bin/env bash
 set -e
 
 unamestr=`uname`
