fixup for test

omitted package prefix at some point

Signed-off-by: Psionik K <73710933+psionic-k@users.noreply.github.com>

Author: psionic-k

test/erk-test.el

@@ -58,6 +58,7 @@
         (clone-root (make-temp-file "erk-clone-test-" t)))
     (erk-new
      "new-project" ; package-name
+     "nupro" ; package-prefix
      clone-root
      "Selindis Raszagal" ; Author
      "new-shakuras" ; user-org