Clarify comment in test

In RSAPrivateKey, Version is an INTEGER. The version must be 0.
diff --git a/tests/suites/test_suite_psa_crypto.function b/tests/suites/test_suite_psa_crypto.function
index 16227fb..87bf28e 100644
--- a/tests/suites/test_suite_psa_crypto.function
+++ b/tests/suites/test_suite_psa_crypto.function
@@ -519,7 +519,7 @@
         uint8_t *end = exported + exported_length;
         size_t len;
         /*   RSAPrivateKey ::= SEQUENCE {
-         *       version             Version,  -- 0
+         *       version             INTEGER,  -- must be 0
          *       modulus             INTEGER,  -- n
          *       publicExponent      INTEGER,  -- e
          *       privateExponent     INTEGER,  -- d