Updates scripts: b755615 Fix: doi2bib: improved usage line

diff --git a/scripts b/scripts
index 49869d77725fceebccf7fb54559932cae8026b0e..b75561585c6269196a3ffa8713621bb377f39fa8 160000 (submodule)
--- a/scripts
+++ b/scripts
@@ -1 +1 @@
-Subproject commit 49869d77725fceebccf7fb54559932cae8026b0e
+Subproject commit b75561585c6269196a3ffa8713621bb377f39fa8