Update Formula/jsctl.rb

Co-authored-by: David Collom <david@collom.co.uk>

Author: joshw123

Formula/jsctl.rb

@@ -36,6 +36,6 @@ def install
   end
 
   test do
-    assert_match version.to_s, shell_output(bin/"jsctl version")
+    assert_match version.to_s, shell_output("bin/jsctl version")
   end
 end