updated tests to accommodate new #+call: line header arg. pass-through

testing/examples/babel.org

@@ -148,5 +148,5 @@
 69fbe856-ca9c-4f20-9146-826d2f488c1d
 #+call: echo(input="testing")
 #+call: echo(input="testing") :results vector
-#+call: echo() :var input="testing"
-#+call: echo() :var input="testing" :results vector
+#+call: echo[:var input="testing"]()
+#+call: echo[:var input="testing"]() :results vector