update tests

testing/examples/babel.org

@@ -228,6 +228,7 @@ src_sh{echo 3} Here is one at the beginning of a line.
 * using the =:noweb-ref= header argument
   :PROPERTIES:
   :ID:       54d68d4b-1544-4745-85ab-4f03b3cbd8a0
+  :noweb-sep: ""
   :END:
 
 #+begin_src sh :tangle yes :noweb yes :shebang #!/bin/sh

testing/lisp/test-ob.el

@@ -566,11 +566,11 @@ on two lines
 #+end_src
 
 #+name: foo
-#+begin_src sh
+#+begin_src sh :noweb-sep \"\"
   bar
 #+end_src
 
-#+begin_src sh :noweb-ref foo
+#+begin_src sh :noweb-ref foo :noweb-sep \"\"
   baz
 #+end_src"
     (should (string= (org-babel-expand-noweb-references) "barbaz"))))