fix directory creation in makefile

the syntax {doc,venor} is only supported in bash and make uses /bin/sh as default shell

diff --git a/Makefile b/Makefile
index 917fab7d9753cb1fa41c18b759e7dc06cf0559d9..03c6a0d6fab44ea10284ea45db15bda8cecf8445 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -123,7 +123,8 @@ release_tar: composer_dependencies htmldoc translate build_frontend
 ### generate a release zip and include 3rd-party dependencies and translations
 release_zip: composer_dependencies htmldoc translate build_frontend
        git archive --prefix=$(ARCHIVE_PREFIX) -o $(ARCHIVE_VERSION).zip -9 HEAD
-       mkdir -p $(ARCHIVE_PREFIX)/{doc,vendor}
+       mkdir -p $(ARCHIVE_PREFIX)/doc
+       mkdir -p $(ARCHIVE_PREFIX)/vendor
        rsync -a doc/html/ $(ARCHIVE_PREFIX)doc/html/
        zip -r $(ARCHIVE_VERSION).zip $(ARCHIVE_PREFIX)doc/
        rsync -a vendor/ $(ARCHIVE_PREFIX)vendor/