Correct jpake test

There actually is a "jpake" feature to check the availability on
Reviewed-by: NStephen Henson <steve@openssl.org>

test/recipes/90-test_jpake.t

@@ -2,4 +2,4 @@
 
 use OpenSSL::Test::Simple;
 
-simple_test("test_jpake", "jpaketest");
+simple_test("test_jpake", "jpaketest", "jpake");